Merge pull request #2 from jiangzhonglian/master

修改 README

README.md

 # Middleware
 中间件 - 日常小工具
+
+* [Python – 如何通过多个字符替换（replace）字符串的方法](doc/mul_replace.md)
+* [Python – 如何通过多个字符分割（split）字符串的方法](doc/mul_split.md)

doc/mul_replace.md

+# Python – 如何通过多个字符替换（replace）字符串的方法
+
+> 方式1:
+
+```py
+a = "eew \\ eawr,2 fd sa:21"
+b = a.replace("\\", " ").replace(":", " ").replace(",", " ")
+print(b)
+```
+
+> 方式2:
+
+```
+import re
+a = "eew \\ eawr,2 fd sa:21"
+b = re.sub(r"[:,\\ ]+", " ", a) # 前面是正则表达式，匹配多种字符（串）
+print(b)
+```
+
+*** 
+原文：https://blog.csdn.net/liuchengzimozigreat/article/details/85339372

doc/mul_split.md

+# python中字符串自带的split方法一次只能使用一个字符对字符串进行分割，但是python的正则模块则可以实现多个字符分割
+
+```py
+import re
+re.split('[_#|]','this_is#a|test')
+```
+
+返回的是一个列表（list），输出结果如下：
+
+```
+['this', 'is', 'a', 'test']
+```
+
+***
+原文：https://blog.csdn.net/yockie/article/details/48298343

u_tool/__init__.py

+# coding: utf8
+from u_tool.text import *

u_tool/u_mysql.py

+#!/usr/bin/python
+# coding:utf-8
+# -------------------------------------------------------------------------------
+# Name: 爬取微博的数据
+# Purpose: 找出相近的词
+# Author:  jiangzhonglian
+# Create_time :  2018年9月14日
+# Update_time:   2018年9月14日
+# Content:
+# Copyright:   (c) jiangzhonglian 2018
+# Licence:   <do yourself>
+# -------------------------------------------------------------------------------
+from pymysql import *
+
+
+class MySQL:
+    def __init__(self,
+                 database,
+                 host="127.0.0.1",
+                 user="xxx",
+                 password="xxx",
+                 port=3306,
+                 charset="utf8"):
+        self.host = host
+        self.user = user
+        self.password = password
+        self.port = port
+        self.database = database
+        self.charset = charset
+
+    # 数据库连接方法:
+    def open(self):
+        self.db = connect(
+            host=self.host,
+            user=self.user,
+            password=self.password,
+            port=self.port,
+            database=self.database,
+            charset=self.charset)
+        # 游标对象
+        self.cur = self.db.cursor()
+
+    # 数据库关闭方法:
+    def close(self):
+        self.cur.close()
+        self.db.close()
+
+    # 数据库执行操作方法:
+    def execute(self, sql, L=[]):
+        try:
+            self.open()
+            self.cur.execute("%s;" % sql, L)
+            self.db.commit()
+            print("ok")
+            msg = "success"
+        except Exception as e:
+            # 错误回滚
+            self.db.rollback()
+            print("Failed", e)
+            msg = "fail"
+        finally:
+            self.close()
+        # 返回统一状态
+        return msg
+
+
+    # 数据库查询所有操作方法:
+    def execute_all(self, sql, L=[]):
+        try:
+            self.open()
+            self.cur.execute("%s;" % sql, L)
+            self.cur.fetchall()
+            print("ok")
+            msg = "success"
+        except Exception as e:
+            # 错误回滚
+            self.db.rollback()
+            print("Failed", e)
+            msg = "fail"
+        finally:
+            self.close()
+        # 返回统一状态
+        return msg
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