From ab45ce56dbcd439419ede302a97c33220ca87562 Mon Sep 17 00:00:00 2001 From: jackfrued Date: Tue, 21 Jul 2020 07:50:07 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E4=BA=86=E9=83=A8=E5=88=86?= =?UTF-8?q?=E6=96=87=E6=A1=A3?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...15\344\275\234\347\263\273\347\273\237.md" | 10 +- ...00\345\217\221\345\205\245\351\227\250.md" | 20 +- ...345\222\214DRF\345\205\245\351\227\250.md" | 46 +- ...\345\205\245\351\227\250-checkpoint.ipynb" | 217 +- ...\347\264\242\345\274\225-checkpoint.ipynb" | 372 + ...\346\225\260\346\215\256-checkpoint.ipynb" | 5834 ++++++++++++++++ ...\347\264\242\345\274\225-checkpoint.ipynb" | 494 ++ ...\350\256\241\347\256\227-checkpoint.ipynb" | 1000 +++ ...\351\233\206\346\210\220-checkpoint.ipynb" | 1209 ++++ ...233\206\346\210\220merge-checkpoint.ipynb" | 1272 ++++ ...\346\223\215\344\275\234-checkpoint.ipynb" | 877 +++ .../1-pandas\345\205\245\351\227\250.ipynb" | 217 +- .../2-pandas-\347\264\242\345\274\225.ipynb" | 1894 +----- ...347\251\272\346\225\260\346\215\256.ipynb" | 6015 +---------------- ...345\261\202\347\264\242\345\274\225.ipynb" | 96 +- ...345\274\225\350\256\241\347\256\227.ipynb" | 2 +- ...346\215\256\351\233\206\346\210\220.ipynb" | 2 +- ...15\256\351\233\206\346\210\220merge.ipynb" | 2 +- ...345\220\210\346\223\215\344\275\234.ipynb" | 2 +- 19 files changed, 11486 insertions(+), 8095 deletions(-) create mode 100644 "Day76-90/code/.ipynb_checkpoints/2-pandas-\347\264\242\345\274\225-checkpoint.ipynb" create mode 100644 "Day76-90/code/.ipynb_checkpoints/3-pandas\346\225\260\346\215\256\346\270\205\346\264\227\344\271\213\347\251\272\346\225\260\346\215\256-checkpoint.ipynb" create mode 100644 "Day76-90/code/.ipynb_checkpoints/4-pandas\345\244\232\345\261\202\347\264\242\345\274\225-checkpoint.ipynb" create mode 100644 "Day76-90/code/.ipynb_checkpoints/5-pandas\345\244\232\345\261\202\347\264\242\345\274\225\350\256\241\347\256\227-checkpoint.ipynb" create mode 100644 "Day76-90/code/.ipynb_checkpoints/6-pandas\346\225\260\346\215\256\351\233\206\346\210\220-checkpoint.ipynb" create mode 100644 "Day76-90/code/.ipynb_checkpoints/7-pandas\346\225\260\346\215\256\351\233\206\346\210\220merge-checkpoint.ipynb" create mode 100644 "Day76-90/code/.ipynb_checkpoints/8-pandas\345\210\206\347\273\204\350\201\232\345\220\210\346\223\215\344\275\234-checkpoint.ipynb" diff --git "a/Day31-35/31-35.\347\216\251\350\275\254Linux\346\223\215\344\275\234\347\263\273\347\273\237.md" "b/Day31-35/31-35.\347\216\251\350\275\254Linux\346\223\215\344\275\234\347\263\273\347\273\237.md" index 2bcc598..9310363 100644 --- "a/Day31-35/31-35.\347\216\251\350\275\254Linux\346\223\215\344\275\234\347\263\273\347\273\237.md" +++ "b/Day31-35/31-35.\347\216\251\350\275\254Linux\346\223\215\344\275\234\347\263\273\347\273\237.md" @@ -230,7 +230,7 @@ Linux系统的命令通常都是如下所示的格式： [root@iZwz97tbgo9lkabnat2lo8Z ~]# !454 ``` - > 说明：查看到历史命令之后，可以用`!历史命令编号`来重新执行该命令；通过`history -c`可以清除历史命令。 + > **说明**：查看到历史命令之后，可以用`!历史命令编号`来重新执行该命令；通过`history -c`可以清除历史命令。 ### 实用程序 @@ -308,7 +308,7 @@ Linux系统的命令通常都是如下所示的格式： ... ``` - > 说明：上面用到了一个名为`wget`的命令，它是一个网络下载器程序，可以从指定的URL下载资源。 + > **说明**：上面用到了一个名为`wget`的命令，它是一个网络下载器程序，可以从指定的URL下载资源。 6. 拷贝/移动文件 - **cp** / **mv**。 @@ -350,7 +350,7 @@ Linux系统的命令通常都是如下所示的格式： 52: ... ``` - > 说明：`grep`在搜索字符串时可以使用正则表达式，如果需要使用正则表达式可以用`grep -E`或者直接使用`egrep`。 + > **说明**：`grep`在搜索字符串时可以使用正则表达式，如果需要使用正则表达式可以用`grep -E`或者直接使用`egrep`。 9. 创建链接和查看链接 - **ln** / **readlink**。 @@ -372,7 +372,7 @@ Linux系统的命令通常都是如下所示的格式： CentOS Linux release 7.4.1708 (Core) ``` - > 说明：链接可以分为硬链接和软链接（符号链接）。硬链接可以认为是一个指向文件数据的指针，就像Python中对象的引用计数，每添加一个硬链接，文件的对应链接数就增加1，只有当文件的链接数为0时，文件所对应的存储空间才有可能被其他文件覆盖。我们平常删除文件时其实并没有删除硬盘上的数据，我们删除的只是一个指针，或者说是数据的一条使用记录，所以类似于“文件粉碎机”之类的软件在“粉碎”文件时除了删除文件指针，还会在文件对应的存储区域填入数据来保证文件无法再恢复。软链接类似于Windows系统下的快捷方式，当软链接链接的文件被删除时，软链接也就失效了。 + > **说明**：链接可以分为硬链接和软链接（符号链接）。硬链接可以认为是一个指向文件数据的指针，就像Python中对象的引用计数，每添加一个硬链接，文件的对应链接数就增加1，只有当文件的链接数为0时，文件所对应的存储空间才有可能被其他文件覆盖。我们平常删除文件时其实并没有删除硬盘上的数据，我们删除的只是一个指针，或者说是数据的一条使用记录，所以类似于“文件粉碎机”之类的软件在“粉碎”文件时除了删除文件指针，还会在文件对应的存储区域填入数据来保证文件无法再恢复。软链接类似于Windows系统下的快捷方式，当软链接链接的文件被删除时，软链接也就失效了。 10. 压缩/解压缩和归档/解归档 - **gzip** / **gunzip** / **xz**。 @@ -429,7 +429,7 @@ Linux系统的命令通常都是如下所示的格式： [root@iZwz97tbgo9lkabnat2lo8Z ~]# xargs < a.txt > b.txt ``` - > 说明：这个命令就像上面演示的那样常在管道（实现进程间通信的一种方式）和重定向（重新指定输入输出的位置）操作中用到，后面的内容中会讲到管道操作和输入输出重定向操作。 + > **说明**：这个命令就像上面演示的那样常在管道（实现进程间通信的一种方式）和重定向（重新指定输入输出的位置）操作中用到，后面的内容中会讲到管道操作和输入输出重定向操作。 13. 显示文件或目录 - **basename** / **dirname**。 diff --git "a/Day41-55/48.\345\211\215\345\220\216\347\253\257\345\210\206\347\246\273\345\274\200\345\217\221\345\205\245\351\227\250.md" "b/Day41-55/48.\345\211\215\345\220\216\347\253\257\345\210\206\347\246\273\345\274\200\345\217\221\345\205\245\351\227\250.md" index 974a9cc..0675a75 100644 --- "a/Day41-55/48.\345\211\215\345\220\216\347\253\257\345\210\206\347\246\273\345\274\200\345\217\221\345\205\245\351\227\250.md" +++ "b/Day41-55/48.\345\211\215\345\220\216\347\253\257\345\210\206\347\246\273\345\274\200\345\217\221\345\205\245\351\227\250.md" @@ -133,21 +133,7 @@ class SubjectMapper(ModelMapper): 学科信息 @@ -157,7 +143,9 @@ class SubjectMapper(ModelMapper):
- {{ subject.name }} + + {{ subject.name }} +
{{ subject.intro }}
diff --git "a/Day41-55/49.RESTful\346\236\266\346\236\204\345\222\214DRF\345\205\245\351\227\250.md" "b/Day41-55/49.RESTful\346\236\266\346\236\204\345\222\214DRF\345\205\245\351\227\250.md" index 0004429..04eb692 100644 --- "a/Day41-55/49.RESTful\346\236\266\346\236\204\345\222\214DRF\345\205\245\351\227\250.md" +++ "b/Day41-55/49.RESTful\346\236\266\346\236\204\345\222\214DRF\345\205\245\351\227\250.md" @@ -156,48 +156,14 @@ urlpatterns = [ 通过Vue.js渲染页面。 -```Python +```HTML 老师信息 @@ -217,9 +183,11 @@ urlpatterns = [
{{ teacher.intro }}
- 好评  ({{ teacher.good_count }}) + 好评   + ({{ teacher.good_count }})      - 差评  ({{ teacher.bad_count }}) + 差评   + ({{ teacher.bad_count }})
@@ -355,7 +323,7 @@ JSON Web Token通常简称为JWT，它是一种开放标准（RFC 7519）。随 2. 在令牌过期之前，无法作废已经颁发的令牌，要解决这个问题，还需要额外的中间层和代码来辅助。 3. JWT是用户的身份令牌，一旦泄露，任何人都可以获得该用户的所有权限。为了降低令牌被盗用后产生的风险，JWT的有效期应该设置得比较短。对于一些比较重要的权限，使用时应通过其他方式再次对用户进行认证，例如短信验证码等。 -#### 使用PyJWT生成和验证令牌 +#### 使用PyJWT 在Python代码中，可以使用三方库`PyJWT`生成和验证JWT，下面是安装`PyJWT`的命令。 diff --git "a/Day76-90/code/.ipynb_checkpoints/1-pandas\345\205\245\351\227\250-checkpoint.ipynb" "b/Day76-90/code/.ipynb_checkpoints/1-pandas\345\205\245\351\227\250-checkpoint.ipynb" index b5b3acc..d10293f 100644 --- "a/Day76-90/code/.ipynb_checkpoints/1-pandas\345\205\245\351\227\250-checkpoint.ipynb" +++ "b/Day76-90/code/.ipynb_checkpoints/1-pandas\345\205\245\351\227\250-checkpoint.ipynb" @@ -2,7 +2,7 @@ "cells": [ { "cell_type": "code", - "execution_count": 2, + "execution_count": 1, "metadata": {}, "outputs": [], "source": [ @@ -13,7 +13,7 @@ }, { "cell_type": "code", - "execution_count": 3, + "execution_count": 2, "metadata": {}, "outputs": [], "source": [ @@ -22,14 +22,7 @@ }, { "cell_type": "code", - "execution_count": null, - "metadata": {}, - "outputs": [], - "source": [] - }, - { - "cell_type": "code", - "execution_count": 4, + "execution_count": 5, "metadata": { "scrolled": false }, @@ -44,7 +37,7 @@ "dtype: int64" ] }, - "execution_count": 4, + "execution_count": 5, "metadata": {}, "output_type": "execute_result" } @@ -52,13 +45,13 @@ "source": [ "# 创建\n", "# Series是一维的数据\n", - "s = Series(data = [120,136,128,99],index = ['Math','Python','En','Chinese'])\n", + "s = Series(data=[120,136,128,99], index=['Math','Python','En','Chinese'])\n", "s" ] }, { "cell_type": "code", - "execution_count": 5, + "execution_count": 6, "metadata": {}, "outputs": [ { @@ -67,7 +60,7 @@ "(4,)" ] }, - "execution_count": 5, + "execution_count": 6, "metadata": {}, "output_type": "execute_result" } @@ -78,16 +71,16 @@ }, { "cell_type": "code", - "execution_count": 6, + "execution_count": 7, "metadata": {}, "outputs": [ { "data": { "text/plain": [ - "array([120, 136, 128, 99], dtype=int64)" + "array([120, 136, 128, 99])" ] }, - "execution_count": 6, + "execution_count": 7, "metadata": {}, "output_type": "execute_result" } @@ -99,7 +92,7 @@ }, { "cell_type": "code", - "execution_count": 7, + "execution_count": 8, "metadata": {}, "outputs": [ { @@ -108,7 +101,7 @@ "numpy.ndarray" ] }, - "execution_count": 7, + "execution_count": 8, "metadata": {}, "output_type": "execute_result" } @@ -119,7 +112,7 @@ }, { "cell_type": "code", - "execution_count": 8, + "execution_count": 9, "metadata": {}, "outputs": [ { @@ -128,7 +121,7 @@ "120.75" ] }, - "execution_count": 8, + "execution_count": 9, "metadata": {}, "output_type": "execute_result" } @@ -139,7 +132,7 @@ }, { "cell_type": "code", - "execution_count": 9, + "execution_count": 10, "metadata": {}, "outputs": [ { @@ -148,7 +141,7 @@ "136" ] }, - "execution_count": 9, + "execution_count": 10, "metadata": {}, "output_type": "execute_result" } @@ -159,7 +152,7 @@ }, { "cell_type": "code", - "execution_count": 10, + "execution_count": 11, "metadata": {}, "outputs": [ { @@ -168,7 +161,7 @@ "15.903353943953666" ] }, - "execution_count": 10, + "execution_count": 11, "metadata": {}, "output_type": "execute_result" } @@ -179,36 +172,33 @@ }, { "cell_type": "code", - "execution_count": 11, - "metadata": { - "collapsed": true - }, + "execution_count": 20, + "metadata": {}, "outputs": [ { "data": { "text/plain": [ - "Math 14400\n", - "Python 18496\n", - "En 16384\n", - "Chinese 9801\n", + "Math 122\n", + "Python 138\n", + "En 130\n", + "Chinese 101\n", "dtype: int64" ] }, - "execution_count": 11, + "execution_count": 20, "metadata": {}, "output_type": "execute_result" } ], "source": [ - "s.pow(2)" + "s.add(1)\n", + "s" ] }, { "cell_type": "code", - "execution_count": 12, - "metadata": { - "collapsed": true - }, + "execution_count": 21, + "metadata": {}, "outputs": [ { "data": { @@ -238,64 +228,64 @@ " \n", " \n", " \n", - " a\n", - " 113\n", - " 116\n", - " 75\n", + " a\n", + " 109\n", + " 120\n", + " 23\n", " \n", " \n", - " b\n", - " 19\n", - " 145\n", - " 23\n", + " b\n", + " 54\n", + " 39\n", + " 54\n", " \n", " \n", - " c\n", - " 57\n", - " 107\n", - " 113\n", + " c\n", + " 97\n", + " 22\n", + " 106\n", " \n", " \n", - " d\n", - " 95\n", + " d\n", + " 21\n", + " 96\n", " 3\n", - " 66\n", " \n", " \n", - " e\n", - " 28\n", - " 121\n", - " 120\n", + " e\n", + " 23\n", + " 145\n", + " 147\n", " \n", " \n", - " f\n", - " 141\n", - " 85\n", - " 132\n", + " f\n", + " 80\n", + " 62\n", + " 83\n", " \n", " \n", - " h\n", - " 124\n", - " 39\n", - " 10\n", + " h\n", + " 70\n", + " 31\n", + " 134\n", " \n", " \n", - " i\n", - " 80\n", - " 35\n", - " 17\n", + " i\n", + " 132\n", + " 51\n", + " 115\n", " \n", " \n", - " j\n", - " 68\n", - " 99\n", - " 31\n", + " j\n", + " 95\n", + " 143\n", + " 111\n", " \n", " \n", - " k\n", - " 74\n", - " 12\n", - " 11\n", + " k\n", + " 66\n", + " 94\n", + " 7\n", " \n", " \n", "\n", @@ -303,19 +293,19 @@ ], "text/plain": [ " Python En Math\n", - "a 113 116 75\n", - "b 19 145 23\n", - "c 57 107 113\n", - "d 95 3 66\n", - "e 28 121 120\n", - "f 141 85 132\n", - "h 124 39 10\n", - "i 80 35 17\n", - "j 68 99 31\n", - "k 74 12 11" + "a 109 120 23\n", + "b 54 39 54\n", + "c 97 22 106\n", + "d 21 96 3\n", + "e 23 145 147\n", + "f 80 62 83\n", + "h 70 31 134\n", + "i 132 51 115\n", + "j 95 143 111\n", + "k 66 94 7" ] }, - "execution_count": 12, + "execution_count": 21, "metadata": {}, "output_type": "execute_result" } @@ -324,7 +314,7 @@ "# DataFrame是二维的数据\n", "# excel就非常相似\n", "# 所有进行数据分析，数据挖掘的工具最基础的结果：行和列，行表示样本，列表示的是属性\n", - "df = DataFrame(data = np.random.randint(0,150,size = (10,3)),index = list('abcdefhijk'),columns=['Python','En','Math'])\n", + "df = DataFrame(data=np.random.randint(0, 150, size=(10, 3)), index=list('abcdefhijk'), columns=['Python', 'En', 'Math'])\n", "df" ] }, @@ -553,7 +543,7 @@ }, { "cell_type": "code", - "execution_count": 19, + "execution_count": 22, "metadata": { "scrolled": true }, @@ -561,50 +551,57 @@ { "data": { "text/plain": [ - "Python 79.9\n", - "En 76.2\n", - "Math 59.8\n", + "Python 74.7\n", + "En 80.3\n", + "Math 78.3\n", "dtype: float64" ] }, - "execution_count": 19, + "execution_count": 22, "metadata": {}, "output_type": "execute_result" } ], "source": [ - "df.mean(axis = 0)" + "df.mean(axis=0)" ] }, { "cell_type": "code", - "execution_count": 20, + "execution_count": 23, "metadata": {}, "outputs": [ { "data": { "text/plain": [ - "a 101.333333\n", - "b 62.333333\n", - "c 92.333333\n", - "d 54.666667\n", - "e 89.666667\n", - "f 119.333333\n", - "h 57.666667\n", - "i 44.000000\n", - "j 66.000000\n", - "k 32.333333\n", + "a 84.000000\n", + "b 49.000000\n", + "c 75.000000\n", + "d 40.000000\n", + "e 105.000000\n", + "f 75.000000\n", + "h 78.333333\n", + "i 99.333333\n", + "j 116.333333\n", + "k 55.666667\n", "dtype: float64" ] }, - "execution_count": 20, + "execution_count": 23, "metadata": {}, "output_type": "execute_result" } ], "source": [ - "df.mean(axis = 1)" + "df.mean(axis=1)" ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [] } ], "metadata": { @@ -623,7 +620,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.7.3" + "version": "3.7.7" } }, "nbformat": 4, diff --git "a/Day76-90/code/.ipynb_checkpoints/2-pandas-\347\264\242\345\274\225-checkpoint.ipynb" "b/Day76-90/code/.ipynb_checkpoints/2-pandas-\347\264\242\345\274\225-checkpoint.ipynb" new file mode 100644 index 0000000..98c1704 --- /dev/null +++ "b/Day76-90/code/.ipynb_checkpoints/2-pandas-\347\264\242\345\274\225-checkpoint.ipynb" @@ -0,0 +1,372 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "import numpy as np\n", + "\n", + "import pandas as pd\n", + "\n", + "from pandas import Series, DataFrame" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s = Series(np.random.randint(0,150,size = 100),index = np.arange(10,110),dtype=np.int16,name = 'Python')\n", + "s" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s[10]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s[[10,20]]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "# 切片操作\n", + "s[10:20]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s[::2]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s[::-2]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "# 可以使用pandas为开发者提供方法，去进行检索\n", + "s.loc[10]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": { + "scrolled": true + }, + "outputs": [], + "source": [ + "s.loc[[10,20]]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s.loc[10:20]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s.loc[::2]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s.loc[::-2]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s.index" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "# iloc 索引从0开始，数字化自然索引\n", + "s.iloc[0]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s.iloc[[0,10]]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s.iloc[0:20]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "s.iloc[::-2]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "# DataFrame是二维，索引大同小异，\n", + "df = DataFrame(data = np.random.randint(0,150,size= (10,3)),index=list('ABCDEFHIJK'),columns=['Python','En','Math'])\n", + "\n", + "df" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df['A']" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df['Python']" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df[['Python','En']]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": { + "scrolled": true + }, + "outputs": [], + "source": [ + "df['Python':'Math']" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df['A':'D']" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.loc['Python']" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": { + "scrolled": true + }, + "outputs": [], + "source": [ + "df.loc['A']" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.loc[['A','H']]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.loc['A':'E']" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.loc[::2]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.loc[::-2]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.iloc['A']" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.iloc[0]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": { + "scrolled": true + }, + "outputs": [], + "source": [ + "df.iloc[[0,5]]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.iloc[0:5]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": { + "scrolled": true + }, + "outputs": [], + "source": [ + "df.iloc[::-2]" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": { + "scrolled": true + }, + "outputs": [], + "source": [ + "df" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.iloc[::2,1:]" + ] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 3", + "language": "python", + "name": "python3" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.7" + } + }, + "nbformat": 4, + "nbformat_minor": 2 +} diff --git "a/Day76-90/code/.ipynb_checkpoints/3-pandas\346\225\260\346\215\256\346\270\205\346\264\227\344\271\213\347\251\272\346\225\260\346\215\256-checkpoint.ipynb" "b/Day76-90/code/.ipynb_checkpoints/3-pandas\346\225\260\346\215\256\346\270\205\346\264\227\344\271\213\347\251\272\346\225\260\346\215\256-checkpoint.ipynb" new file mode 100644 index 0000000..17346ba --- /dev/null +++ "b/Day76-90/code/.ipynb_checkpoints/3-pandas\346\225\260\346\215\256\346\270\205\346\264\227\344\271\213\347\251\272\346\225\260\346\215\256-checkpoint.ipynb" @@ -0,0 +1,5834 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "metadata": {}, + "outputs": [], + "source": [ + "import numpy as np\n", + "\n", + "import pandas as pd\n", + "\n", + "from pandas import Series,DataFrame" + ] + }, + { + "cell_type": "code", + "execution_count": 6, + "metadata": {}, + "outputs": [ + { + "data": { + "text/html": [ + "
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"source": [ + "en = df['En'].value_counts()\n", + "en" + ] + }, + { + "cell_type": "code", + "execution_count": 54, + "metadata": {}, + "outputs": [ + { + "data": { + "text/plain": [ + "8.0" + ] + }, + "execution_count": 54, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "en.index[0]" + ] + }, + { + "cell_type": "code", + "execution_count": 52, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "Python 75.0\n", + "En 74.0\n", + "Math 77.5\n", + "Physic 73.0\n", + "Chem 72.0\n", + "dtype: float64 \n" + ] + } + ], + "source": [ + "s = df.median()\n", + "print(s,type(s))" + ] + }, + { + "cell_type": "code", + "execution_count": 55, + "metadata": {}, + "outputs": [], + "source": [ + "zhongshu = []\n", + "for col in df.columns:\n", + " zhongshu.append(df[col].value_counts().index[0])" + ] + }, + { + "cell_type": "code", + "execution_count": 57, + "metadata": {}, + "outputs": [ + { + "data": { 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for filling holes in reindexed Series\n", + " pad / ffill: propagate last valid observation forward to next valid\n", + " backfill / bfill: use NEXT valid observation to fill gap'''\n", + "df3.fillna(method='bfill',axis = 1)" + ] + }, + { + "cell_type": "code", + "execution_count": 71, + "metadata": {}, + "outputs": [ + { + "data": { + "text/plain": [ + "(2000, 5)" + ] + }, + "execution_count": 71, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "#数据量足够大，空数据比较少，直接删除\n", + "df.shape" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "df.dro" + ] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 3", + "language": "python", + "name": "python3" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.7" + } + }, + "nbformat": 4, + "nbformat_minor": 2 +} diff --git "a/Day76-90/code/.ipynb_checkpoints/4-pandas\345\244\232\345\261\202\347\264\242\345\274\225-checkpoint.ipynb" "b/Day76-90/code/.ipynb_checkpoints/4-pandas\345\244\232\345\261\202\347\264\242\345\274\225-checkpoint.ipynb" new file mode 100644 index 0000000..d8e0d1e --- /dev/null +++ "b/Day76-90/code/.ipynb_checkpoints/4-pandas\345\244\232\345\261\202\347\264\242\345\274\225-checkpoint.ipynb" @@ -0,0 +1,494 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "metadata": {}, + "outputs": [], + "source": [ + "import numpy as np\n", + "\n", + "import pandas as pd\n", + "# 数据分析BI-------->人工智能AI\n", + "# 数据分析和数据挖掘一个意思，\n", + "# 工具和软件：Excel 免费版\n", + "# SPSS（一人一年10000）、SAS（一人一年5000）、Matlab 收费\n", + "# R、Python（全方位语言，流行） 免费\n", + "# Python + numpy + scipy + pandas + matplotlib + seaborn + pyEcharts + sklearn + kereas（Tensorflow）+…… \n", + "# 代码，自动化（数据输入----输出结果）\n", + "from pandas import Series,DataFrame" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "metadata": { + "collapsed": true + }, + "outputs": [ + { + "data": { + "text/plain": [ + "a 63\n", + "b 107\n", + "c 16\n", + "d 35\n", + "e 140\n", + "f 83\n", + "dtype: int32" + ] + }, + "execution_count": 2, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# 多层索引，行列\n", + "# 单层索引\n", + "s = Series(np.random.randint(0,150,size = 6),index=list('abcdef'))\n", + "s" + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/plain": [ + "张三 期中 114\n", + " 期末 131\n", + "李四 期中 3\n", + " 期末 63\n", + "王五 期中 107\n", + " 期末 34\n", + "dtype: int32" + ] + }, + "execution_count": 3, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# 多层索引，两层，三层以上（规则一样）\n", + "s2 = Series(np.random.randint(0,150,size = 6),index = pd.MultiIndex.from_product([['张三','李四','王五'],['期中','期末']]))\n", + "s2" + ] + }, + { + "cell_type": "code", + "execution_count": 1, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "ename": "NameError", + "evalue": "name 'DataFrame' is not defined", + "output_type": "error", + "traceback": [ + "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m", + "\u001b[0;31mNameError\u001b[0m Traceback (most recent call last)", + "\u001b[0;32m\u001b[0m in \u001b[0;36m\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mdf\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mDataFrame\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnp\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrandom\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrandint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;36m150\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0msize\u001b[0m \u001b[0;34m=\u001b[0m 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\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 2\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 3\u001b[0m \u001b[0mdf\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n", + "\u001b[0;31mNameError\u001b[0m: name 'DataFrame' is not defined" + ] + } + ], + "source": [ + "df = DataFrame(np.random.randint(0,150,size = (6,3)),columns=['Python','En','Math'],index =pd.MultiIndex.from_product([['张三','李四','王五'],['期中','期末']]) )\n", + "\n", + "df" + ] + }, + { + "cell_type": "code", + "execution_count": 5, + "metadata": { + "collapsed": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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PythonEnMath
张三期中A153117
B8256123
期末A14278
B695017
李四期中A9187143
B12011839
期末A567655
B11105121
王五期中A147781
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期末A4945114
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" + ], + "text/plain": [ + " Python En Math\n", + "张三 期中 A 15 31 17\n", + " B 82 56 123\n", + " 期末 A 14 2 78\n", + " B 69 50 17\n", + "李四 期中 A 91 87 143\n", + " B 120 118 39\n", + " 期末 A 56 76 55\n", + " B 11 105 121\n", + "王五 期中 A 147 78 1\n", + " B 128 126 146\n", + " 期末 A 49 45 114\n", + " B 121 26 77" + ] + }, + "execution_count": 5, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# 三层索引\n", + "df3 = DataFrame(np.random.randint(0,150,size = (12,3)),columns=['Python','En','Math'],index =pd.MultiIndex.from_product([['张三','李四','王五'],['期中','期末'],['A','B']]) )\n", + "\n", + "df3" + ] + }, + { + "cell_type": "code", + "execution_count": 9, + "metadata": {}, + "outputs": [ + { + "data": { + "text/plain": [ + "73" + ] + }, + "execution_count": 9, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# 先获取列后获取行\n", + "df['Python']['张三']['期中']" + ] + }, + { + "cell_type": "code", + "execution_count": 14, + "metadata": {}, + "outputs": [], + "source": [ + "df2 = df.copy()" + ] + }, + { + "cell_type": "code", + "execution_count": 16, + "metadata": { + "collapsed": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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PythonEnMath
张三期中73525
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" + ], + "text/plain": [ + " Python En Math\n", + "张三 期中 73 5 25\n", + " 期末 37 36 56\n", + "李四 期中 149 81 142\n", + " 期末 71 138 0\n", + "王五 期中 11 94 103\n", + " 期末 25 121 83" + ] + }, + "execution_count": 16, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "df2.sort_index()" + ] + }, + { + "cell_type": "code", + "execution_count": 22, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/plain": [ + "73" + ] + }, + "execution_count": 22, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# 先获取行，后获取列\n", + "df.loc['张三'].loc['期中']['Python']" + ] + }, + { + "cell_type": "code", + "execution_count": 19, + "metadata": {}, + "outputs": [ + { + "data": { + "text/html": [ + "
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PythonEnMath
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" + ], + "text/plain": [ + " Python En Math\n", + "张三 期中 73 5 25\n", + " 期末 37 36 56" + ] + }, + "execution_count": 19, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "df.iloc[[0,1]]" + ] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 3", + "language": "python", + "name": "python3" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.7" + } + }, + "nbformat": 4, + "nbformat_minor": 2 +} diff --git "a/Day76-90/code/.ipynb_checkpoints/5-pandas\345\244\232\345\261\202\347\264\242\345\274\225\350\256\241\347\256\227-checkpoint.ipynb" "b/Day76-90/code/.ipynb_checkpoints/5-pandas\345\244\232\345\261\202\347\264\242\345\274\225\350\256\241\347\256\227-checkpoint.ipynb" new file mode 100644 index 0000000..4bcaad2 --- /dev/null +++ "b/Day76-90/code/.ipynb_checkpoints/5-pandas\345\244\232\345\261\202\347\264\242\345\274\225\350\256\241\347\256\227-checkpoint.ipynb" @@ -0,0 +1,1000 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "metadata": {}, + "outputs": [], + "source": [ + "import numpy as np\n", + "\n", + "import pandas as pd\n", + "\n", + "from pandas import Series,DataFrame" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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PythonEnMath
期中期末期中期末期中期末
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PythonEnMath
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PythonEnMath
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PythonEnMath
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EnMathPython
A期中115131
期末7317101
B期中532462
期末1015734
C期中3612324
期末11710576
D期中7946112
期末4212246
E期中1041066
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F期中4132111
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" + ], + "text/plain": [ + " En Math Python\n", + "A 期中 1 15 131\n", + " 期末 73 17 101\n", + "B 期中 53 24 62\n", + " 期末 101 57 34\n", + "C 期中 36 123 24\n", + " 期末 117 105 76\n", + "D 期中 79 46 112\n", + " 期末 42 122 46\n", + "E 期中 104 10 66\n", + " 期末 45 108 113\n", + "F 期中 4 132 111\n", + " 期末 41 21 108" + ] + }, + "execution_count": 20, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# 行和列的多层索引，进行转换\n", + "# Stack the prescribed level(s) from columns to index.\n", + "# 从列变成行\n", + "df2 = df.stack(level = 1)\n", + "df2" + ] + }, + { + "cell_type": "code", + "execution_count": 21, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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"b/Day76-90/code/.ipynb_checkpoints/6-pandas\346\225\260\346\215\256\351\233\206\346\210\220-checkpoint.ipynb" new file mode 100644 index 0000000..7df4f33 --- /dev/null +++ "b/Day76-90/code/.ipynb_checkpoints/6-pandas\346\225\260\346\215\256\351\233\206\346\210\220-checkpoint.ipynb" @@ -0,0 +1,1209 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "metadata": {}, + "outputs": [], + "source": [ + "import numpy as np\n", + "\n", + "import pandas as pd\n", + "from pandas import Series,DataFrame" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "# 数据分析数据挖掘\n", + "# 有数据情况下：\n", + "# 数据预处理\n", + "# 数据清洗（空数据，异常值）\n", + "# 数据集成（多个数据合并到一起，级联）数据可能存放在多个表中\n", + "# 数据转化\n", + "# 数据规约（属性减少（不重要的属性删除），数据减少去重操作）" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/plain": [ + "array([[ 5, 12, 67, 29, 46, 103, 53, 53, 139, 87],\n", + " [126, 33, 55, 104, 45, 70, 96, 133, 116, 43],\n", + " [ 84, 45, 17, 42, 19, 11, 125, 43, 54, 39],\n", + " [ 97, 68, 99, 90, 28, 60, 135, 84, 111, 63],\n", + " [114, 56, 30, 81, 48, 73, 119, 65, 20, 22]])" + ] + }, + "metadata": {}, + "output_type": "display_data" + }, + { + "data": { + "text/plain": [ + "array([[115, 128, 122, 127, 4, 135, 26, 25, 131, 139],\n", + " [ 66, 119, 37, 136, 101, 40, 102, 127, 148, 127],\n", + " [ 89, 80, 140, 133, 51, 142, 47, 27, 54, 23],\n", + " [ 64, 127, 33, 128, 60, 106, 67, 94, 110, 76],\n", + " [ 6, 21, 23, 96, 10, 62, 26, 79, 149, 43],\n", + " [116, 143, 132, 118, 68, 21, 57, 133, 124, 124]])" + ] + }, + "metadata": {}, + "output_type": "display_data" + } + ], + "source": [ + "# 首先看numpy数组的集成\n", + "nd1 = np.random.randint(0,150,size = (5,10))\n", + "\n", + "nd2 = np.random.randint(0,150,size = (6,10))\n", + "display(nd1,nd2)" + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/plain": [ + "array([[ 5, 12, 67, 29, 46, 103, 53, 53, 139, 87],\n", + " [126, 33, 55, 104, 45, 70, 96, 133, 116, 43],\n", + " [ 84, 45, 17, 42, 19, 11, 125, 43, 54, 39],\n", + " [ 97, 68, 99, 90, 28, 60, 135, 84, 111, 63],\n", + " [114, 56, 30, 81, 48, 73, 119, 65, 20, 22],\n", + " [115, 128, 122, 127, 4, 135, 26, 25, 131, 139],\n", + " [ 66, 119, 37, 136, 101, 40, 102, 127, 148, 127],\n", + " [ 89, 80, 140, 133, 51, 142, 47, 27, 54, 23],\n", + " [ 64, 127, 33, 128, 60, 106, 67, 94, 110, 76],\n", + " [ 6, 21, 23, 96, 10, 62, 26, 79, 149, 43],\n", + " [116, 143, 132, 118, 68, 21, 57, 133, 124, 124]])" + ] + }, + "execution_count": 3, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# 原来数据一个5行，一个是6行，级联之后变成了11行\n", + "nd3 = np.concatenate([nd1,nd2],axis = 0)\n", + "nd3" + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/plain": [ + "array([[110, 38, 144, 92, 38, 2, 67, 2, 103, 81],\n", + " [ 56, 61, 61, 22, 108, 145, 95, 44, 40, 100],\n", + " [ 65, 74, 85, 123, 47, 117, 35, 55, 120, 20],\n", + " [ 15, 9, 4, 84, 71, 133, 140, 13, 71, 91],\n", + " [ 94, 31, 41, 5, 7, 32, 50, 24, 18, 120]])" + ] + }, + "metadata": {}, + "output_type": "display_data" + }, + { + "data": { + "text/plain": [ + "array([[ 65, 149, 86, 138, 98],\n", + " [136, 49, 102, 45, 140],\n", + " [ 13, 124, 94, 81, 73],\n", + " [ 82, 38, 0, 75, 94],\n", + " [146, 28, 143, 61, 49]])" + ] + }, + "metadata": {}, + "output_type": "display_data" + } + ], + "source": [ + "nd1 = np.random.randint(0,150,size = (5,10))\n", + "\n", + "nd2 = np.random.randint(0,150,size = (5,5))\n", + "display(nd1,nd2)" + ] + }, + { + "cell_type": "code", + "execution_count": 6, + "metadata": {}, + "outputs": [ + { + "data": { + "text/plain": [ + "array([[110, 38, 144, 92, 38, 2, 67, 2, 103, 81, 65, 149, 86,\n", + " 138, 98],\n", + " [ 56, 61, 61, 22, 108, 145, 95, 44, 40, 100, 136, 49, 102,\n", + " 45, 140],\n", + " [ 65, 74, 85, 123, 47, 117, 35, 55, 120, 20, 13, 124, 94,\n", + " 81, 73],\n", + " [ 15, 9, 4, 84, 71, 133, 140, 13, 71, 91, 82, 38, 0,\n", + " 75, 94],\n", + " [ 94, 31, 41, 5, 7, 32, 50, 24, 18, 120, 146, 28, 143,\n", + " 61, 49]])" + ] + }, + "execution_count": 6, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# axis = 0行级联（第一维度的级联），axis = 1（第二个维度的级联，列的级联）\n", + "np.concatenate((nd1,nd2),axis = 1)" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "# pandas级联操作，pandas基于numpy\n", + "# pandas的级联类似" + ] + }, + { + "cell_type": "code", + "execution_count": 7, + "metadata": { + "collapsed": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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" + ], + "text/plain": [ + " Python Math En score_mean\n", + "A 40.0 15.0 90.0 48.3\n", + "B 59.0 52.0 83.0 64.7\n", + "C 14.0 138.0 137.0 96.3\n", + "D 89.0 78.0 53.0 73.3\n", + "E 81.0 101.0 3.0 61.7\n", + "F 75.0 79.0 86.0 80.0\n", + "score_mean 59.7 77.2 75.3 70.7" + ] + }, + "execution_count": 40, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "df4.merge(df5,left_index=True,right_index=True)" + ] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 3", + "language": "python", + "name": "python3" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.7" + } + }, + "nbformat": 4, + "nbformat_minor": 2 +} diff --git "a/Day76-90/code/.ipynb_checkpoints/8-pandas\345\210\206\347\273\204\350\201\232\345\220\210\346\223\215\344\275\234-checkpoint.ipynb" "b/Day76-90/code/.ipynb_checkpoints/8-pandas\345\210\206\347\273\204\350\201\232\345\220\210\346\223\215\344\275\234-checkpoint.ipynb" new file mode 100644 index 0000000..e9dddcc --- /dev/null +++ "b/Day76-90/code/.ipynb_checkpoints/8-pandas\345\210\206\347\273\204\350\201\232\345\220\210\346\223\215\344\275\234-checkpoint.ipynb" @@ -0,0 +1,877 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "metadata": {}, + "outputs": [], + "source": [ + "# 分组聚合透视\n", + "# 很多时候属性是相似的\n", + "\n", + "import numpy as np\n", + "\n", + "import pandas as pd\n", + "\n", + "from pandas import Series,DataFrame" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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HandSmokesexweightIQ
0rightyesmale80100
1leftyesfemale50120
2leftnofemale4890
3rightnomale75130
4rightyesmale68140
5rightnomale10080
6rightnofemale4094
7rightnofemale90110
8leftnomale88100
9rightyesfemale76160
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" + ], + "text/plain": [ + " Hand Smoke sex weight IQ\n", + "0 right yes male 80 100\n", + "1 left yes female 50 120\n", + "2 left no female 48 90\n", + "3 right no male 75 130\n", + "4 right yes male 68 140\n", + "5 right no male 100 80\n", + "6 right no female 40 94\n", + "7 right no female 90 110\n", + "8 left no male 88 100\n", + "9 right yes female 76 160" + ] + }, + "execution_count": 2, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "# 走右手习惯，是否抽烟，性别，对体重，智商，有一定影响\n", + "\n", + "df = DataFrame({'Hand':['right','left','left','right','right','right','right','right','left','right'],\n", + " 'Smoke':['yes','yes','no','no','yes','no','no','no','no','yes'],\n", + " 'sex':['male','female','female','male','male','male','female','female','male','female'],\n", + " 'weight':[80,50,48,75,68,100,40,90,88,76],\n", + " 'IQ':[100,120,90,130,140,80,94,110,100,160]})\n", + "df" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [ + "# 分组聚合查看规律，某一条件下规律" + ] + }, + { + "cell_type": "code", + "execution_count": 7, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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weightIQ
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" + ], + "text/plain": [ + " weight IQ\n", + "Hand \n", + "left 62.0 103.3\n", + "right 75.6 116.3" + ] + }, + "execution_count": 7, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "data = df.groupby(by = ['Hand'])[['weight','IQ']].mean().round(1)\n", + "data" + ] + }, + { + "cell_type": "code", + "execution_count": 11, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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" + ], + "text/plain": [ + " weight\n", + "Hand \n", + "left 62.0\n", + "right 75.6" + ] + }, + "execution_count": 11, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "df.groupby(by = ['Hand'])[['weight']].apply(np.mean).round(1)" + ] + }, + { + "cell_type": "code", + "execution_count": 14, + "metadata": {}, + "outputs": [], + "source": [ + "df2 = df.groupby(by = ['Hand'])[['weight']].transform(np.mean).round(1)\n" + ] + }, + { + "cell_type": "code", + "execution_count": 17, + "metadata": { + "collapsed": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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" + ], + "text/plain": [ + " weight_mean\n", + "0 75.6\n", + "1 62.0\n", + "2 62.0\n", + "3 75.6\n", + "4 75.6\n", + "5 75.6\n", + "6 75.6\n", + "7 75.6\n", + "8 62.0\n", + "9 75.6" + ] + }, + "execution_count": 17, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "df2 = df2.add_suffix('_mean')\n", + "df2" + ] + }, + { + "cell_type": "code", + "execution_count": 19, + "metadata": { + "collapsed": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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HandSmokesexweightIQweight_mean
0rightyesmale8010075.6
1leftyesfemale5012062.0
2leftnofemale489062.0
3rightnomale7513075.6
4rightyesmale6814075.6
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7rightnofemale9011075.6
8leftnomale8810062.0
9rightyesfemale7616075.6
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" + ], + "text/plain": [ + " Hand Smoke sex weight IQ weight_mean\n", + "0 right yes male 80 100 75.6\n", + "1 left yes female 50 120 62.0\n", + "2 left no female 48 90 62.0\n", + "3 right no male 75 130 75.6\n", + "4 right yes male 68 140 75.6\n", + "5 right no male 100 80 75.6\n", + "6 right no female 40 94 75.6\n", + "7 right no female 90 110 75.6\n", + "8 left no male 88 100 62.0\n", + "9 right yes female 76 160 75.6" + ] + }, + "execution_count": 19, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "df3 = df.merge(df2,left_index=True,right_index=True)\n", + "df3" + ] + }, + { + "cell_type": "code", + "execution_count": 26, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/plain": [ + "Hand\n", + "left ([3, 3], [62.0, 103.3])\n", + "right ([7, 7], [75.6, 116.3])\n", + "dtype: object" + ] + }, + "execution_count": 26, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "def count(x):\n", + " \n", + " return (x.count(),x.mean().round(1))\n", + "\n", + "df.groupby(by = ['Hand'])[['weight','IQ']].apply(count)" + ] + }, + { + "cell_type": "code", + "execution_count": 28, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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IQ
Handsex
leftfemale120
male100
rightfemale160
male140
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" + ], + "text/plain": [ + " IQ\n", + "Hand sex \n", + "left female 120\n", + " male 100\n", + "right female 160\n", + " male 140" + ] + }, + "execution_count": 28, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "df.groupby(by = ['Hand','sex'])[['IQ']].max()" + ] + }, + { + "cell_type": "code", + "execution_count": 29, + "metadata": {}, + "outputs": [ + { + "data": { + "text/plain": [ + "" + ] + }, + "execution_count": 29, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "data = df.groupby(by = ['Hand'])['IQ','weight']\n", + "data" + ] + }, + { + "cell_type": "code", + "execution_count": 31, + "metadata": { + "scrolled": true + }, + "outputs": [ + { + "data": { + "text/html": [ + "
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IQweight
maxmeanmaxmean
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left120103.38862.0
right160116.310075.6
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IQweight
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left12062.0
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\n", + "
" + ], + "text/plain": [ + " IQ weight\n", + "Hand \n", + "left 120 62.0\n", + "right 160 75.6" + ] + }, + "execution_count": 35, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "data.agg({'IQ':'max','weight':'mean'}).round(1)" + ] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 3", + "language": "python", + "name": "python3" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.7" + } + }, + "nbformat": 4, + "nbformat_minor": 2 +} diff --git "a/Day76-90/code/1-pandas\345\205\245\351\227\250.ipynb" "b/Day76-90/code/1-pandas\345\205\245\351\227\250.ipynb" index b5b3acc..d10293f 100644 --- "a/Day76-90/code/1-pandas\345\205\245\351\227\250.ipynb" +++ "b/Day76-90/code/1-pandas\345\205\245\351\227\250.ipynb" @@ -2,7 +2,7 @@ "cells": [ { "cell_type": "code", - "execution_count": 2, + "execution_count": 1, "metadata": {}, "outputs": [], "source": [ @@ -13,7 +13,7 @@ }, { "cell_type": "code", - "execution_count": 3, + "execution_count": 2, "metadata": {}, "outputs": [], "source": [ @@ -22,14 +22,7 @@ }, { "cell_type": "code", - "execution_count": null, - "metadata": {}, - "outputs": [], - "source": [] - }, - { - "cell_type": "code", - "execution_count": 4, + "execution_count": 5, "metadata": { "scrolled": false }, @@ -44,7 +37,7 @@ "dtype: int64" ] }, - "execution_count": 4, + "execution_count": 5, "metadata": {}, "output_type": "execute_result" } @@ -52,13 +45,13 @@ "source": [ "# 创建\n", "# Series是一维的数据\n", - "s = Series(data = [120,136,128,99],index = ['Math','Python','En','Chinese'])\n", + "s = Series(data=[120,136,128,99], index=['Math','Python','En','Chinese'])\n", "s" ] }, { "cell_type": "code", - "execution_count": 5, + "execution_count": 6, "metadata": {}, "outputs": [ { @@ -67,7 +60,7 @@ "(4,)" ] }, - "execution_count": 5, + "execution_count": 6, "metadata": {}, "output_type": "execute_result" } @@ -78,16 +71,16 @@ }, { "cell_type": "code", - "execution_count": 6, + "execution_count": 7, "metadata": {}, "outputs": [ { "data": { "text/plain": [ - "array([120, 136, 128, 99], dtype=int64)" + "array([120, 136, 128, 99])" ] }, - "execution_count": 6, + "execution_count": 7, "metadata": {}, "output_type": "execute_result" } @@ -99,7 +92,7 @@ }, { "cell_type": "code", - "execution_count": 7, + "execution_count": 8, "metadata": {}, "outputs": [ { @@ -108,7 +101,7 @@ "numpy.ndarray" ] }, - "execution_count": 7, + "execution_count": 8, "metadata": {}, "output_type": "execute_result" } @@ -119,7 +112,7 @@ }, { "cell_type": "code", - "execution_count": 8, + "execution_count": 9, "metadata": {}, "outputs": [ { @@ -128,7 +121,7 @@ "120.75" ] }, - "execution_count": 8, + "execution_count": 9, "metadata": {}, "output_type": "execute_result" } @@ -139,7 +132,7 @@ }, { "cell_type": "code", - "execution_count": 9, + "execution_count": 10, "metadata": {}, "outputs": [ { @@ -148,7 +141,7 @@ "136" ] }, - "execution_count": 9, + "execution_count": 10, "metadata": {}, "output_type": "execute_result" } @@ -159,7 +152,7 @@ }, { "cell_type": "code", - "execution_count": 10, + "execution_count": 11, "metadata": {}, "outputs": [ { @@ -168,7 +161,7 @@ "15.903353943953666" ] }, - "execution_count": 10, + "execution_count": 11, "metadata": {}, "output_type": "execute_result" } @@ -179,36 +172,33 @@ }, { "cell_type": "code", - "execution_count": 11, - "metadata": { - "collapsed": true - }, + "execution_count": 20, + "metadata": {}, "outputs": [ { "data": { "text/plain": [ - "Math 14400\n", - "Python 18496\n", - "En 16384\n", - "Chinese 9801\n", + "Math 122\n", + "Python 138\n", + "En 130\n", + "Chinese 101\n", "dtype: int64" ] }, - "execution_count": 11, + "execution_count": 20, "metadata": {}, "output_type": "execute_result" } ], "source": [ - "s.pow(2)" + "s.add(1)\n", + "s" ] }, { "cell_type": "code", - "execution_count": 12, - "metadata": { - "collapsed": true - }, + "execution_count": 21, + "metadata": {}, "outputs": [ { "data": { @@ -238,64 +228,64 @@ " \n", " \n", " \n", - " a\n", - " 113\n", - " 116\n", - " 75\n", + " a\n", + " 109\n", + " 120\n", + " 23\n", " \n", " \n", - " b\n", - " 19\n", - " 145\n", - " 23\n", + " b\n", + " 54\n", + " 39\n", + " 54\n", " \n", " \n", - " c\n", - " 57\n", - " 107\n", - " 113\n", + " c\n", + " 97\n", + " 22\n", + " 106\n", " \n", " \n", - " d\n", - " 95\n", + " d\n", + " 21\n", + " 96\n", " 3\n", - " 66\n", " \n", " \n", - " e\n", - " 28\n", - " 121\n", - " 120\n", + " e\n", + " 23\n", + " 145\n", + " 147\n", " \n", " \n", - " f\n", - " 141\n", - " 85\n", - " 132\n", + " f\n", + " 80\n", + " 62\n", + " 83\n", " \n", " \n", - " h\n", - " 124\n", - " 39\n", - " 10\n", + " h\n", + " 70\n", + " 31\n", + " 134\n", " \n", " \n", - " i\n", - " 80\n", - " 35\n", - " 17\n", + " i\n", + " 132\n", + " 51\n", + " 115\n", " \n", " \n", - " j\n", - " 68\n", - " 99\n", - " 31\n", + " j\n", + " 95\n", + " 143\n", + " 111\n", " \n", " \n", - " k\n", - " 74\n", - " 12\n", - " 11\n", + " k\n", + " 66\n", + " 94\n", + " 7\n", " \n", " \n", "\n", @@ -303,19 +293,19 @@ ], "text/plain": [ " Python En Math\n", - "a 113 116 75\n", - "b 19 145 23\n", - "c 57 107 113\n", - "d 95 3 66\n", - "e 28 121 120\n", - "f 141 85 132\n", - "h 124 39 10\n", - "i 80 35 17\n", - "j 68 99 31\n", - "k 74 12 11" + "a 109 120 23\n", + "b 54 39 54\n", + "c 97 22 106\n", + "d 21 96 3\n", + "e 23 145 147\n", + "f 80 62 83\n", + "h 70 31 134\n", + "i 132 51 115\n", + "j 95 143 111\n", + "k 66 94 7" ] }, - "execution_count": 12, + "execution_count": 21, "metadata": {}, "output_type": "execute_result" } @@ -324,7 +314,7 @@ "# DataFrame是二维的数据\n", "# excel就非常相似\n", "# 所有进行数据分析，数据挖掘的工具最基础的结果：行和列，行表示样本，列表示的是属性\n", - "df = DataFrame(data = np.random.randint(0,150,size = (10,3)),index = list('abcdefhijk'),columns=['Python','En','Math'])\n", + "df = DataFrame(data=np.random.randint(0, 150, size=(10, 3)), index=list('abcdefhijk'), columns=['Python', 'En', 'Math'])\n", "df" ] }, @@ -553,7 +543,7 @@ }, { "cell_type": "code", - "execution_count": 19, + "execution_count": 22, "metadata": { "scrolled": true }, @@ -561,50 +551,57 @@ { "data": { "text/plain": [ - "Python 79.9\n", - "En 76.2\n", - "Math 59.8\n", + "Python 74.7\n", + "En 80.3\n", + "Math 78.3\n", "dtype: float64" ] }, - "execution_count": 19, + "execution_count": 22, "metadata": {}, "output_type": "execute_result" } ], "source": [ - "df.mean(axis = 0)" + "df.mean(axis=0)" ] }, { "cell_type": "code", - "execution_count": 20, + "execution_count": 23, "metadata": {}, "outputs": [ { "data": { "text/plain": [ - "a 101.333333\n", - "b 62.333333\n", - "c 92.333333\n", - "d 54.666667\n", - "e 89.666667\n", - "f 119.333333\n", - "h 57.666667\n", - "i 44.000000\n", - "j 66.000000\n", - "k 32.333333\n", + "a 84.000000\n", + "b 49.000000\n", + "c 75.000000\n", + "d 40.000000\n", + "e 105.000000\n", + "f 75.000000\n", + "h 78.333333\n", + "i 99.333333\n", + "j 116.333333\n", + "k 55.666667\n", "dtype: float64" ] }, - "execution_count": 20, + "execution_count": 23, "metadata": {}, "output_type": "execute_result" } ], "source": [ - "df.mean(axis = 1)" + "df.mean(axis=1)" ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [] } ], "metadata": { @@ -623,7 +620,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.7.3" + "version": "3.7.7" } }, "nbformat": 4, diff --git "a/Day76-90/code/2-pandas-\347\264\242\345\274\225.ipynb" "b/Day76-90/code/2-pandas-\347\264\242\345\274\225.ipynb" index ddbde0a..98c1704 100644 --- "a/Day76-90/code/2-pandas-\347\264\242\345\274\225.ipynb" +++ "b/Day76-90/code/2-pandas-\347\264\242\345\274\225.ipynb" @@ -2,7 +2,7 @@ "cells": [ { "cell_type": "code", - "execution_count": 1, + "execution_count": null, "metadata": {}, "outputs": [], "source": [ @@ -10,88 +10,14 @@ "\n", "import pandas as pd\n", "\n", - "from pandas import Series,DataFrame" + "from pandas import Series, DataFrame" ] }, { "cell_type": "code", - "execution_count": 3, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/plain": [ - "10 34\n", - "11 111\n", - "12 113\n", - "13 103\n", - "14 147\n", - "15 63\n", - "16 11\n", - "17 130\n", - "18 38\n", - "19 17\n", - "20 32\n", - "21 112\n", - "22 75\n", - "23 68\n", - "24 124\n", - "25 138\n", - "26 56\n", - "27 1\n", - "28 88\n", - "29 113\n", - "30 63\n", - "31 42\n", - "32 65\n", - "33 104\n", - "34 105\n", - "35 0\n", - "36 95\n", - "37 119\n", - "38 86\n", - "39 124\n", - " ... \n", - "80 127\n", - "81 139\n", - "82 110\n", - "83 65\n", - "84 127\n", - "85 108\n", - "86 33\n", - "87 91\n", - "88 134\n", - "89 65\n", - "90 110\n", - "91 144\n", - "92 40\n", - "93 3\n", - "94 3\n", - "95 59\n", - "96 97\n", - "97 64\n", - "98 126\n", - "99 94\n", - "100 20\n", - "101 107\n", - "102 59\n", - "103 146\n", - "104 83\n", - "105 59\n", - "106 25\n", - "107 0\n", - "108 78\n", - "109 93\n", - "Name: Python, Length: 100, dtype: int16" - ] - }, - "execution_count": 3, - "metadata": {}, - "output_type": "execute_result" - } - ], + "execution_count": null, + "metadata": {}, + "outputs": [], "source": [ "s = Series(np.random.randint(0,150,size = 100),index = np.arange(10,110),dtype=np.int16,name = 'Python')\n", "s" @@ -99,107 +25,27 @@ }, { "cell_type": "code", - "execution_count": 4, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "ename": "KeyError", - "evalue": "0", - "output_type": "error", - "traceback": [ - "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m", - "\u001b[1;31mKeyError\u001b[0m Traceback (most recent call last)", - "\u001b[1;32m\u001b[0m in \u001b[0;36m\u001b[1;34m\u001b[0m\n\u001b[0;32m 1\u001b[0m \u001b[1;31m# 索引操作\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 2\u001b[1;33m \u001b[0ms\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;36m0\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\series.py\u001b[0m in \u001b[0;36m__getitem__\u001b[1;34m(self, key)\u001b[0m\n\u001b[0;32m 866\u001b[0m \u001b[0mkey\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mcom\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mapply_if_callable\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 867\u001b[0m \u001b[1;32mtry\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m--> 868\u001b[1;33m \u001b[0mresult\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mindex\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_value\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 869\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 870\u001b[0m \u001b[1;32mif\u001b[0m \u001b[1;32mnot\u001b[0m \u001b[0mis_scalar\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mresult\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\indexes\\base.py\u001b[0m in \u001b[0;36mget_value\u001b[1;34m(self, series, key)\u001b[0m\n\u001b[0;32m 4373\u001b[0m \u001b[1;32mtry\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 4374\u001b[0m return self._engine.get_value(s, k,\n\u001b[1;32m-> 4375\u001b[1;33m tz=getattr(series.dtype, 'tz', None))\n\u001b[0m\u001b[0;32m 4376\u001b[0m \u001b[1;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m \u001b[1;32mas\u001b[0m \u001b[0me1\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 4377\u001b[0m \u001b[1;32mif\u001b[0m \u001b[0mlen\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;33m>\u001b[0m \u001b[1;36m0\u001b[0m \u001b[1;32mand\u001b[0m \u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mholds_integer\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;32mor\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mis_boolean\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_value\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_value\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.Int64HashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.Int64HashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;31mKeyError\u001b[0m: 0" - ] - } - ], - "source": [ - "# 索引操作\n", - "s[0]" - ] - }, - { - "cell_type": "code", - "execution_count": 5, + "execution_count": null, "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - "34" - ] - }, - "execution_count": 5, - "metadata": {}, - "output_type": "execute_result" - } - ], + "outputs": [], "source": [ "s[10]" ] }, { "cell_type": "code", - "execution_count": 6, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/plain": [ - "10 34\n", - "20 32\n", - "Name: Python, dtype: int16" - ] - }, - "execution_count": 6, - "metadata": {}, - "output_type": "execute_result" - } - ], + "execution_count": null, + "metadata": {}, + "outputs": [], "source": [ "s[[10,20]]" ] }, { "cell_type": "code", - "execution_count": 7, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/plain": [ - "20 32\n", - "21 112\n", - "22 75\n", - "23 68\n", - "24 124\n", - "25 138\n", - "26 56\n", - "27 1\n", - "28 88\n", - "29 113\n", - "Name: Python, dtype: int16" - ] - }, - "execution_count": 7, - "metadata": {}, - "output_type": "execute_result" - } - ], + "execution_count": null, + "metadata": {}, + "outputs": [], "source": [ "# 切片操作\n", "s[10:20]" @@ -207,164 +53,27 @@ }, { "cell_type": "code", - "execution_count": 8, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/plain": [ - "10 34\n", - "12 113\n", - "14 147\n", - "16 11\n", - "18 38\n", - "20 32\n", - "22 75\n", - "24 124\n", - "26 56\n", - "28 88\n", - "30 63\n", - "32 65\n", - "34 105\n", - "36 95\n", - "38 86\n", - "40 6\n", - "42 57\n", - "44 72\n", - "46 43\n", - "48 87\n", - "50 83\n", - "52 99\n", - "54 132\n", - "56 17\n", - "58 116\n", - "60 33\n", - "62 51\n", - "64 80\n", - "66 121\n", - "68 81\n", - "70 0\n", - "72 50\n", - "74 31\n", - "76 114\n", - "78 60\n", - "80 127\n", - "82 110\n", - "84 127\n", - "86 33\n", - "88 134\n", - "90 110\n", - "92 40\n", - "94 3\n", - "96 97\n", - "98 126\n", - "100 20\n", - "102 59\n", - "104 83\n", - "106 25\n", - "108 78\n", - "Name: Python, dtype: int16" - ] - }, - "execution_count": 8, - "metadata": {}, - "output_type": "execute_result" - } - ], + "execution_count": null, + "metadata": {}, + "outputs": [], "source": [ "s[::2]" ] }, { "cell_type": "code", - "execution_count": 9, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/plain": [ - "109 93\n", - "107 0\n", - "105 59\n", - "103 146\n", - "101 107\n", - "99 94\n", - "97 64\n", - "95 59\n", - "93 3\n", - "91 144\n", - "89 65\n", - "87 91\n", - "85 108\n", - "83 65\n", - "81 139\n", - "79 14\n", - "77 96\n", - "75 76\n", - "73 29\n", - "71 68\n", - "69 4\n", - "67 57\n", - "65 58\n", - "63 106\n", - "61 42\n", - "59 135\n", - "57 56\n", - "55 12\n", - "53 135\n", - "51 74\n", - "49 129\n", - "47 110\n", - "45 1\n", - "43 90\n", - "41 120\n", - "39 124\n", - "37 119\n", - "35 0\n", - "33 104\n", - "31 42\n", - "29 113\n", - "27 1\n", - "25 138\n", - "23 68\n", - "21 112\n", - "19 17\n", - "17 130\n", - "15 63\n", - "13 103\n", - "11 111\n", - "Name: Python, dtype: int16" - ] - }, - "execution_count": 9, - "metadata": {}, - "output_type": "execute_result" - } - ], + "execution_count": null, + "metadata": {}, + "outputs": [], "source": [ "s[::-2]" ] }, { "cell_type": "code", - "execution_count": 10, + "execution_count": null, "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - "34" - ] - }, - "execution_count": 10, - "metadata": {}, - "output_type": "execute_result" - } - ], + "outputs": [], "source": [ "# 可以使用pandas为开发者提供方法，去进行检索\n", "s.loc[10]" @@ -372,249 +81,56 @@ }, { "cell_type": "code", - "execution_count": 11, + "execution_count": null, "metadata": { "scrolled": true }, - "outputs": [ - { - "data": { - "text/plain": [ - "10 34\n", - "20 32\n", - "Name: Python, dtype: int16" - ] - }, - "execution_count": 11, - "metadata": {}, - "output_type": "execute_result" - } - ], + "outputs": [], "source": [ "s.loc[[10,20]]" ] }, { "cell_type": "code", - "execution_count": 12, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/plain": [ - "10 34\n", - "11 111\n", - "12 113\n", - "13 103\n", - "14 147\n", - "15 63\n", - "16 11\n", - "17 130\n", - "18 38\n", - "19 17\n", - "20 32\n", - "Name: Python, dtype: int16" - ] - }, - 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"outputs": [ - { - "data": { - "text/plain": [ - "34" - ] - }, - "execution_count": 15, - "metadata": {}, - "output_type": "execute_result" - } - ], + "outputs": [], "source": [ "# iloc 索引从0开始，数字化自然索引\n", "s.iloc[0]" @@ -622,257 +138,36 @@ }, { "cell_type": "code", - "execution_count": 17, + "execution_count": null, "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - "10 34\n", - "20 32\n", - "Name: Python, dtype: int16" - ] - }, - "execution_count": 17, - "metadata": {}, - "output_type": "execute_result" - } - ], + "outputs": [], "source": [ "s.iloc[[0,10]]" ] }, { "cell_type": "code", - "execution_count": 18, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/plain": [ - "10 34\n", - "11 111\n", - "12 113\n", - "13 103\n", - "14 147\n", - "15 63\n", - "16 11\n", - "17 130\n", - "18 38\n", - "19 17\n", - "20 32\n", - "21 112\n", - "22 75\n", - "23 68\n", - "24 124\n", - "25 138\n", - "26 56\n", - "27 1\n", - "28 88\n", - "29 113\n", - "Name: Python, dtype: int16" - 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] - }, - "execution_count": 20, - "metadata": {}, - "output_type": "execute_result" - } - ], + "execution_count": null, + "metadata": {}, + "outputs": [], "source": [ "s.iloc[::-2]" ] }, { "cell_type": "code", - "execution_count": 21, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/html": [ - "
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"\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.PyObjectHashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.PyObjectHashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;31mKeyError\u001b[0m: 'A'", - "\nDuring handling of the above exception, another exception occurred:\n", - "\u001b[1;31mKeyError\u001b[0m Traceback (most recent call last)", - "\u001b[1;32m\u001b[0m in \u001b[0;36m\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0mdf\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;34m'A'\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\frame.py\u001b[0m in \u001b[0;36m__getitem__\u001b[1;34m(self, key)\u001b[0m\n\u001b[0;32m 2925\u001b[0m \u001b[1;32mif\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mcolumns\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mnlevels\u001b[0m \u001b[1;33m>\u001b[0m \u001b[1;36m1\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 2926\u001b[0m \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_getitem_multilevel\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m-> 2927\u001b[1;33m \u001b[0mindexer\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mcolumns\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_loc\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 2928\u001b[0m \u001b[1;32mif\u001b[0m \u001b[0mis_integer\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mindexer\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 2929\u001b[0m \u001b[0mindexer\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;33m[\u001b[0m\u001b[0mindexer\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\indexes\\base.py\u001b[0m in \u001b[0;36mget_loc\u001b[1;34m(self, key, method, tolerance)\u001b[0m\n\u001b[0;32m 2657\u001b[0m \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_engine\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_loc\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 2658\u001b[0m \u001b[1;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m-> 2659\u001b[1;33m \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_engine\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_loc\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_maybe_cast_indexer\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 2660\u001b[0m \u001b[0mindexer\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_indexer\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mmethod\u001b[0m\u001b[1;33m=\u001b[0m\u001b[0mmethod\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mtolerance\u001b[0m\u001b[1;33m=\u001b[0m\u001b[0mtolerance\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 2661\u001b[0m \u001b[1;32mif\u001b[0m \u001b[0mindexer\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mndim\u001b[0m \u001b[1;33m>\u001b[0m \u001b[1;36m1\u001b[0m \u001b[1;32mor\u001b[0m \u001b[0mindexer\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0msize\u001b[0m \u001b[1;33m>\u001b[0m \u001b[1;36m1\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.PyObjectHashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.PyObjectHashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;31mKeyError\u001b[0m: 'A'" - ] - } - ], + "execution_count": null, + "metadata": {}, + "outputs": [], "source": [ "df['A']" ] }, { "cell_type": "code", - "execution_count": 23, - "metadata": { - "collapsed": true - }, - "outputs": [ - { - "data": { - "text/plain": [ - "A 103\n", - "B 135\n", - "C 13\n", - "D 47\n", - "E 89\n", - "F 64\n", - "H 48\n", - "I 16\n", - "J 122\n", - "K 60\n", - "Name: Python, dtype: int32" - 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"\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.PyObjectHashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.PyObjectHashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;31mKeyError\u001b[0m: 'Python'", - "\nDuring handling of the above exception, another exception occurred:\n", - "\u001b[1;31mKeyError\u001b[0m Traceback (most recent call last)", - "\u001b[1;32m\u001b[0m in \u001b[0;36m\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0mdf\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mloc\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;34m'Python'\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\indexing.py\u001b[0m in \u001b[0;36m__getitem__\u001b[1;34m(self, key)\u001b[0m\n\u001b[0;32m 1498\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 1499\u001b[0m \u001b[0mmaybe_callable\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mcom\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mapply_if_callable\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mobj\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m-> 1500\u001b[1;33m \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_getitem_axis\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mmaybe_callable\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0maxis\u001b[0m\u001b[1;33m=\u001b[0m\u001b[0maxis\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 1501\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 1502\u001b[0m \u001b[1;32mdef\u001b[0m \u001b[0m_is_scalar_access\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\indexing.py\u001b[0m in \u001b[0;36m_getitem_axis\u001b[1;34m(self, key, axis)\u001b[0m\n\u001b[0;32m 1911\u001b[0m \u001b[1;31m# fall thru to straight lookup\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 1912\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_validate_key\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0maxis\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m-> 1913\u001b[1;33m \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_get_label\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0maxis\u001b[0m\u001b[1;33m=\u001b[0m\u001b[0maxis\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 1914\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 1915\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\indexing.py\u001b[0m in \u001b[0;36m_get_label\u001b[1;34m(self, label, axis)\u001b[0m\n\u001b[0;32m 139\u001b[0m \u001b[1;32mraise\u001b[0m \u001b[0mIndexingError\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34m'no slices here, handle elsewhere'\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 140\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m--> 141\u001b[1;33m \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mobj\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_xs\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mlabel\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0maxis\u001b[0m\u001b[1;33m=\u001b[0m\u001b[0maxis\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 142\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 143\u001b[0m \u001b[1;32mdef\u001b[0m \u001b[0m_get_loc\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mkey\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0maxis\u001b[0m\u001b[1;33m=\u001b[0m\u001b[1;32mNone\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\generic.py\u001b[0m in \u001b[0;36mxs\u001b[1;34m(self, key, axis, level, drop_level)\u001b[0m\n\u001b[0;32m 3583\u001b[0m drop_level=drop_level)\n\u001b[0;32m 3584\u001b[0m \u001b[1;32melse\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m-> 3585\u001b[1;33m \u001b[0mloc\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mindex\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_loc\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 3586\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 3587\u001b[0m \u001b[1;32mif\u001b[0m \u001b[0misinstance\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mloc\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mnp\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mndarray\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32md:\\python36\\lib\\site-packages\\pandas\\core\\indexes\\base.py\u001b[0m in \u001b[0;36mget_loc\u001b[1;34m(self, key, method, tolerance)\u001b[0m\n\u001b[0;32m 2657\u001b[0m \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_engine\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_loc\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 2658\u001b[0m \u001b[1;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m-> 2659\u001b[1;33m \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_engine\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_loc\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_maybe_cast_indexer\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 2660\u001b[0m \u001b[0mindexer\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_indexer\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mkey\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mmethod\u001b[0m\u001b[1;33m=\u001b[0m\u001b[0mmethod\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mtolerance\u001b[0m\u001b[1;33m=\u001b[0m\u001b[0mtolerance\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 2661\u001b[0m \u001b[1;32mif\u001b[0m \u001b[0mindexer\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mndim\u001b[0m \u001b[1;33m>\u001b[0m \u001b[1;36m1\u001b[0m \u001b[1;32mor\u001b[0m \u001b[0mindexer\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0msize\u001b[0m \u001b[1;33m>\u001b[0m \u001b[1;36m1\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\index.pyx\u001b[0m in \u001b[0;36mpandas._libs.index.IndexEngine.get_loc\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.PyObjectHashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;32mpandas\\_libs\\hashtable_class_helper.pxi\u001b[0m in \u001b[0;36mpandas._libs.hashtable.PyObjectHashTable.get_item\u001b[1;34m()\u001b[0m\n", - "\u001b[1;31mKeyError\u001b[0m: 'Python'" - ] - } - ], + "execution_count": null, + "metadata": {}, + "outputs": [], "source": [ "df.loc['Python']" ] }, { "cell_type": "code", - "execution_count": 28, + "execution_count": null, "metadata": { "scrolled": true }, - "outputs": [ - { - "data": { - "text/plain": [ - "Python 103\n", - "En 56\n", - "Math 98\n", - "Name: A, dtype: int32" - ] - }, - "execution_count": 28, - "metadata": {}, - 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期末2512183
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" - ], - "text/plain": [ - " Python En Math\n", - "张三 期中 73 5 25\n", - " 期末 37 36 56\n", - "李四 期中 149 81 142\n", - " 期末 71 138 0\n", - "王五 期中 11 94 103\n", - " 期末 25 121 83" - ] - }, - "execution_count": 4, - "metadata": {}, - "output_type": "execute_result" + "ename": "NameError", + "evalue": "name 'DataFrame' is not defined", + "output_type": "error", + "traceback": [ + "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m", + "\u001b[0;31mNameError\u001b[0m Traceback (most recent call last)", + "\u001b[0;32m\u001b[0m in \u001b[0;36m\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mdf\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mDataFrame\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnp\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrandom\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrandint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;36m150\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0msize\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m(\u001b[0m\u001b[0;36m6\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;36m3\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0mcolumns\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m'Python'\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m'En'\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m'Math'\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0mindex\u001b[0m \u001b[0;34m=\u001b[0m\u001b[0mpd\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mMultiIndex\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfrom_product\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m'张三'\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m'李四'\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m'王五'\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m'期中'\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m'期末'\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 2\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 3\u001b[0m \u001b[0mdf\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n", + "\u001b[0;31mNameError\u001b[0m: name 'DataFrame' is not defined" + ] } ], "source": [ @@ -560,7 +486,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.6.5" + "version": "3.7.7" } }, "nbformat": 4, diff --git "a/Day76-90/code/5-pandas\345\244\232\345\261\202\347\264\242\345\274\225\350\256\241\347\256\227.ipynb" "b/Day76-90/code/5-pandas\345\244\232\345\261\202\347\264\242\345\274\225\350\256\241\347\256\227.ipynb" index 22e1c8e..4bcaad2 100644 --- "a/Day76-90/code/5-pandas\345\244\232\345\261\202\347\264\242\345\274\225\350\256\241\347\256\227.ipynb" +++ "b/Day76-90/code/5-pandas\345\244\232\345\261\202\347\264\242\345\274\225\350\256\241\347\256\227.ipynb" @@ -992,7 +992,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.6.5" + "version": "3.7.7" } }, "nbformat": 4, diff --git "a/Day76-90/code/6-pandas\346\225\260\346\215\256\351\233\206\346\210\220.ipynb" "b/Day76-90/code/6-pandas\346\225\260\346\215\256\351\233\206\346\210\220.ipynb" index e128ee4..7df4f33 100644 --- "a/Day76-90/code/6-pandas\346\225\260\346\215\256\351\233\206\346\210\220.ipynb" +++ "b/Day76-90/code/6-pandas\346\225\260\346\215\256\351\233\206\346\210\220.ipynb" @@ -1201,7 +1201,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.6.5" + "version": "3.7.7" } }, "nbformat": 4, diff --git "a/Day76-90/code/7-pandas\346\225\260\346\215\256\351\233\206\346\210\220merge.ipynb" "b/Day76-90/code/7-pandas\346\225\260\346\215\256\351\233\206\346\210\220merge.ipynb" index 8b2eefc..06fd9f6 100644 --- "a/Day76-90/code/7-pandas\346\225\260\346\215\256\351\233\206\346\210\220merge.ipynb" +++ "b/Day76-90/code/7-pandas\346\225\260\346\215\256\351\233\206\346\210\220merge.ipynb" @@ -1264,7 +1264,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.6.5" + "version": "3.7.7" } }, "nbformat": 4, diff --git "a/Day76-90/code/8-pandas\345\210\206\347\273\204\350\201\232\345\220\210\346\223\215\344\275\234.ipynb" "b/Day76-90/code/8-pandas\345\210\206\347\273\204\350\201\232\345\220\210\346\223\215\344\275\234.ipynb" index 7c16aff..e9dddcc 100644 --- "a/Day76-90/code/8-pandas\345\210\206\347\273\204\350\201\232\345\220\210\346\223\215\344\275\234.ipynb" +++ "b/Day76-90/code/8-pandas\345\210\206\347\273\204\350\201\232\345\220\210\346\223\215\344\275\234.ipynb" @@ -869,7 +869,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.6.5" + "version": "3.7.7" } }, "nbformat": 4, -- GitLab