diff --git a/Day21-30/code/demo01/img/Thumbs.db b/Day21-30/code/demo01/img/Thumbs.db
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diff --git a/Day41-55/car/car/__init__.py b/Day41-55/code/car/car/__init__.py
similarity index 100%
rename from Day41-55/car/car/__init__.py
rename to Day41-55/code/car/car/__init__.py
diff --git a/Day41-55/car/car/settings.py b/Day41-55/code/car/car/settings.py
similarity index 100%
rename from Day41-55/car/car/settings.py
rename to Day41-55/code/car/car/settings.py
diff --git a/Day41-55/car/car/urls.py b/Day41-55/code/car/car/urls.py
similarity index 100%
rename from Day41-55/car/car/urls.py
rename to Day41-55/code/car/car/urls.py
diff --git a/Day41-55/car/car/wsgi.py b/Day41-55/code/car/car/wsgi.py
similarity index 100%
rename from Day41-55/car/car/wsgi.py
rename to Day41-55/code/car/car/wsgi.py
diff --git a/Day41-55/car/manage.py b/Day41-55/code/car/manage.py
similarity index 100%
rename from Day41-55/car/manage.py
rename to Day41-55/code/car/manage.py
diff --git a/Day41-55/car/search/__init__.py b/Day41-55/code/car/search/__init__.py
similarity index 100%
rename from Day41-55/car/search/__init__.py
rename to Day41-55/code/car/search/__init__.py
diff --git a/Day41-55/car/search/admin.py b/Day41-55/code/car/search/admin.py
similarity index 100%
rename from Day41-55/car/search/admin.py
rename to Day41-55/code/car/search/admin.py
diff --git a/Day41-55/car/search/apps.py b/Day41-55/code/car/search/apps.py
similarity index 100%
rename from Day41-55/car/search/apps.py
rename to Day41-55/code/car/search/apps.py
diff --git a/Day41-55/car/search/migrations/0001_initial.py b/Day41-55/code/car/search/migrations/0001_initial.py
similarity index 100%
rename from Day41-55/car/search/migrations/0001_initial.py
rename to Day41-55/code/car/search/migrations/0001_initial.py
diff --git a/Day41-55/car/search/migrations/0002_auto_20180524_1420.py b/Day41-55/code/car/search/migrations/0002_auto_20180524_1420.py
similarity index 100%
rename from Day41-55/car/search/migrations/0002_auto_20180524_1420.py
rename to Day41-55/code/car/search/migrations/0002_auto_20180524_1420.py
diff --git a/Day41-55/car/search/migrations/__init__.py b/Day41-55/code/car/search/migrations/__init__.py
similarity index 100%
rename from Day41-55/car/search/migrations/__init__.py
rename to Day41-55/code/car/search/migrations/__init__.py
diff --git a/Day41-55/car/search/models.py b/Day41-55/code/car/search/models.py
similarity index 100%
rename from Day41-55/car/search/models.py
rename to Day41-55/code/car/search/models.py
diff --git a/Day41-55/car/search/tests.py b/Day41-55/code/car/search/tests.py
similarity index 100%
rename from Day41-55/car/search/tests.py
rename to Day41-55/code/car/search/tests.py
diff --git a/Day41-55/car/search/views.py b/Day41-55/code/car/search/views.py
similarity index 100%
rename from Day41-55/car/search/views.py
rename to Day41-55/code/car/search/views.py
diff --git a/Day41-55/car/static/images/icon-no.svg b/Day41-55/code/car/static/images/icon-no.svg
similarity index 100%
rename from Day41-55/car/static/images/icon-no.svg
rename to Day41-55/code/car/static/images/icon-no.svg
diff --git a/Day41-55/car/static/images/icon-yes.svg b/Day41-55/code/car/static/images/icon-yes.svg
similarity index 100%
rename from Day41-55/car/static/images/icon-yes.svg
rename to Day41-55/code/car/static/images/icon-yes.svg
diff --git a/Day41-55/car/templates/add.html b/Day41-55/code/car/templates/add.html
similarity index 100%
rename from Day41-55/car/templates/add.html
rename to Day41-55/code/car/templates/add.html
diff --git a/Day41-55/car/templates/search.html b/Day41-55/code/car/templates/search.html
similarity index 100%
rename from Day41-55/car/templates/search.html
rename to Day41-55/code/car/templates/search.html
diff --git a/Day41-55/car/templates/search2.html b/Day41-55/code/car/templates/search2.html
similarity index 100%
rename from Day41-55/car/templates/search2.html
rename to Day41-55/code/car/templates/search2.html
diff --git a/Day41-55/oa/hrs/__init__.py b/Day41-55/code/hellodjango/db.sqlite3
similarity index 100%
rename from Day41-55/oa/hrs/__init__.py
rename to Day41-55/code/hellodjango/db.sqlite3
diff --git a/Day41-55/oa/hrs/migrations/__init__.py b/Day41-55/code/hellodjango/demo/__init__.py
similarity index 100%
rename from Day41-55/oa/hrs/migrations/__init__.py
rename to Day41-55/code/hellodjango/demo/__init__.py
diff --git a/Day41-55/code/hellodjango/demo/admin.py b/Day41-55/code/hellodjango/demo/admin.py
new file mode 100644
index 0000000000000000000000000000000000000000..c6a7284ffd2fe544580341558bab08d712b2d93e
--- /dev/null
+++ b/Day41-55/code/hellodjango/demo/admin.py
@@ -0,0 +1,12 @@
+from django.contrib import admin
+
+from demo.models import Teacher
+
+
+class TeacherAdmin(admin.ModelAdmin):
+    list_display = ('no', 'name', 'job', 'intro', 'motto')
+    search_fields = ('name', 'intro')
+    ordering = ('no', )
+
+
+admin.site.register(Teacher, TeacherAdmin)
diff --git a/Day41-55/code/hellodjango/demo/apps.py b/Day41-55/code/hellodjango/demo/apps.py
new file mode 100644
index 0000000000000000000000000000000000000000..57920c332b6e27a518c8aecf58c770f868328449
--- /dev/null
+++ b/Day41-55/code/hellodjango/demo/apps.py
@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+
+class DemoConfig(AppConfig):
+    name = 'demo'
diff --git a/Day41-55/code/hellodjango/demo/migrations/0001_initial.py b/Day41-55/code/hellodjango/demo/migrations/0001_initial.py
new file mode 100644
index 0000000000000000000000000000000000000000..ab29432cff27cc6475a136bf6490bdbce86e59d3
--- /dev/null
+++ b/Day41-55/code/hellodjango/demo/migrations/0001_initial.py
@@ -0,0 +1,27 @@
+# Generated by Django 2.0.6 on 2018-07-03 02:20
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Teacher',
+            fields=[
+                ('no', models.AutoField(db_column='tno', primary_key=True, serialize=False)),
+                ('name', models.CharField(db_column='tname', max_length=20)),
+                ('job', models.CharField(db_column='tjob', max_length=10)),
+                ('intro', models.CharField(db_column='tintro', max_length=1023)),
+                ('motto', models.CharField(db_column='tmotto', max_length=255)),
+            ],
+            options={
+                'db_table': 'tb_teacher',
+            },
+        ),
+    ]
diff --git a/Day41-55/code/hellodjango/demo/migrations/0002_teacher_photo.py b/Day41-55/code/hellodjango/demo/migrations/0002_teacher_photo.py
new file mode 100644
index 0000000000000000000000000000000000000000..b325a2ca59d3b22af7143f9a03635e5f70901921
--- /dev/null
+++ b/Day41-55/code/hellodjango/demo/migrations/0002_teacher_photo.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.0.6 on 2018-07-03 03:42
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('demo', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='teacher',
+            name='photo',
+            field=models.CharField(db_column='tphoto', max_length=511, null=True),
+        ),
+    ]
diff --git a/Day41-55/code/hellodjango/demo/migrations/0003_auto_20180703_1355.py b/Day41-55/code/hellodjango/demo/migrations/0003_auto_20180703_1355.py
new file mode 100644
index 0000000000000000000000000000000000000000..f1f1d088dd0dcd23fbbd1fb55e181b0d94c8c10d
--- /dev/null
+++ b/Day41-55/code/hellodjango/demo/migrations/0003_auto_20180703_1355.py
@@ -0,0 +1,17 @@
+# Generated by Django 2.0.6 on 2018-07-03 05:55
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('demo', '0002_teacher_photo'),
+    ]
+
+    operations = [
+        migrations.AlterModelTable(
+            name='teacher',
+            table=None,
+        ),
+    ]
diff --git a/Day41-55/code/hellodjango/demo/migrations/0004_auto_20180703_1412.py b/Day41-55/code/hellodjango/demo/migrations/0004_auto_20180703_1412.py
new file mode 100644
index 0000000000000000000000000000000000000000..2dfc593015a8274fa4618196ccea7d7c5602773c
--- /dev/null
+++ b/Day41-55/code/hellodjango/demo/migrations/0004_auto_20180703_1412.py
@@ -0,0 +1,21 @@
+# Generated by Django 2.0.6 on 2018-07-03 06:12
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('demo', '0003_auto_20180703_1355'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='teacher',
+            options={'ordering': ('-no',)},
+        ),
+        migrations.AlterModelTable(
+            name='teacher',
+            table='tb_teacher',
+        ),
+    ]
diff --git a/Day41-55/shop/cart/__init__.py b/Day41-55/code/hellodjango/demo/migrations/__init__.py
similarity index 100%
rename from Day41-55/shop/cart/__init__.py
rename to Day41-55/code/hellodjango/demo/migrations/__init__.py
diff --git a/Day41-55/code/hellodjango/demo/models.py b/Day41-55/code/hellodjango/demo/models.py
new file mode 100644
index 0000000000000000000000000000000000000000..f6a7fcc97d15eefaf09c4b61fe9f84a97ce0883d
--- /dev/null
+++ b/Day41-55/code/hellodjango/demo/models.py
@@ -0,0 +1,17 @@
+from django.db import models
+
+# Django框架中包含了ORM(对象关系映射)框架
+# ORM可以帮助我们完成对象模型到关系模型的双向转换
+
+
+class Teacher(models.Model):
+    no = models.AutoField(primary_key=True, db_column='tno', verbose_name='编号')
+    name = models.CharField(max_length=20, db_column='tname', verbose_name='姓名')
+    job = models.CharField(max_length=10, db_column='tjob', verbose_name='职位')
+    intro = models.CharField(max_length=1023, db_column='tintro', verbose_name='简介')
+    motto = models.CharField(max_length=255, db_column='tmotto', verbose_name='教学理念')
+    photo = models.CharField(max_length=511, db_column='tphoto', null=True)
+
+    class Meta(object):
+        db_table = 'tb_teacher'
+        ordering = ('-no', )
diff --git a/Day41-55/oa/hrs/tests.py b/Day41-55/code/hellodjango/demo/tests.py
similarity index 100%
rename from Day41-55/oa/hrs/tests.py
rename to Day41-55/code/hellodjango/demo/tests.py
diff --git a/Day41-55/code/hellodjango/demo/views.py b/Day41-55/code/hellodjango/demo/views.py
new file mode 100644
index 0000000000000000000000000000000000000000..d1e779d3bc46ae0ad637c6f635e833caa18c6a40
--- /dev/null
+++ b/Day41-55/code/hellodjango/demo/views.py
@@ -0,0 +1,9 @@
+from django.shortcuts import render
+
+from demo.models import Teacher
+
+
+def home(request):
+    # 通过ORM框架实现持久化操作CRUD
+    ctx = {'teachers_list': list(Teacher.objects.all())}
+    return render(request, 'demo/home.html', ctx)
diff --git a/Day41-55/oa/oa/__init__.py b/Day41-55/code/hellodjango/hellodjango/__init__.py
similarity index 100%
rename from Day41-55/oa/oa/__init__.py
rename to Day41-55/code/hellodjango/hellodjango/__init__.py
diff --git a/Day41-55/code/hellodjango/hellodjango/settings.py b/Day41-55/code/hellodjango/hellodjango/settings.py
new file mode 100644
index 0000000000000000000000000000000000000000..96e21a3b6361b19f74d8ce2c4aa2f7b02c8d7e32
--- /dev/null
+++ b/Day41-55/code/hellodjango/hellodjango/settings.py
@@ -0,0 +1,127 @@
+"""
+Django settings for hellodjango project.
+
+Generated by 'django-admin startproject' using Django 2.0.6.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/2.0/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/2.0/ref/settings/
+"""
+
+import os
+
+# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/2.0/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'j*jr(3-it8$lrp&u@e^!f%8!ws*=jx)ga*ln%l6aqftu-uy1=1'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'demo',
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'hellodjango.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [os.path.join(BASE_DIR, 'templates')],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'hellodjango.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/2.0/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.mysql',
+        'NAME': 'demo',
+        'HOST': '120.77.222.217',
+        'PORT': 3306,
+        'USER': 'root',
+        'PASSWORD': '123456',
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/2.0/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/2.0/topics/i18n/
+
+LANGUAGE_CODE = 'zh-hans'
+
+TIME_ZONE = 'Asia/Chongqing'
+
+# internationalization
+USE_I18N = True
+
+# localization
+USE_L10N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/2.0/howto/static-files/
+STATICFILES_DIRS = [os.path.join(BASE_DIR, 'static')]
+STATIC_URL = '/static/'
diff --git a/Day41-55/code/hellodjango/hellodjango/urls.py b/Day41-55/code/hellodjango/hellodjango/urls.py
new file mode 100644
index 0000000000000000000000000000000000000000..b0028fffcb12845e051feda775928a4dff108034
--- /dev/null
+++ b/Day41-55/code/hellodjango/hellodjango/urls.py
@@ -0,0 +1,24 @@
+"""hellodjango URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/2.0/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.urls import path
+
+from demo import views
+
+urlpatterns = [
+    path('', views.home),
+    path('admin/', admin.site.urls),
+]
diff --git a/Day41-55/code/hellodjango/hellodjango/wsgi.py b/Day41-55/code/hellodjango/hellodjango/wsgi.py
new file mode 100644
index 0000000000000000000000000000000000000000..661e9b4445f03b6777a32182abf4937c6f10fa2a
--- /dev/null
+++ b/Day41-55/code/hellodjango/hellodjango/wsgi.py
@@ -0,0 +1,16 @@
+"""
+WSGI config for hellodjango project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/2.0/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "hellodjango.settings")
+
+application = get_wsgi_application()
diff --git a/Day41-55/code/hellodjango/manage.py b/Day41-55/code/hellodjango/manage.py
new file mode 100644
index 0000000000000000000000000000000000000000..f45676fa62816b13b235e9858356301354e8faee
--- /dev/null
+++ b/Day41-55/code/hellodjango/manage.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+import os
+import sys
+
+if __name__ == "__main__":
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "hellodjango.settings")
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
diff --git a/Day41-55/code/hellodjango/static/images/andrew.png b/Day41-55/code/hellodjango/static/images/andrew.png
new file mode 100644
index 0000000000000000000000000000000000000000..195e6e745a43d5901d21bba1df0e795dc7a5ac95
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diff --git a/Day41-55/code/hellodjango/static/images/dennis.png b/Day41-55/code/hellodjango/static/images/dennis.png
new file mode 100644
index 0000000000000000000000000000000000000000..24533401b8e38d913dbdae7761e8fe586410dfd5
Binary files /dev/null and b/Day41-55/code/hellodjango/static/images/dennis.png differ
diff --git a/Day41-55/code/hellodjango/static/images/ken.png b/Day41-55/code/hellodjango/static/images/ken.png
new file mode 100644
index 0000000000000000000000000000000000000000..5d322c4ca9c5ea88e8b9a1db30caefebf764f480
Binary files /dev/null and b/Day41-55/code/hellodjango/static/images/ken.png differ
diff --git a/Day41-55/code/hellodjango/static/images/linus.png b/Day41-55/code/hellodjango/static/images/linus.png
new file mode 100644
index 0000000000000000000000000000000000000000..acbe3bf986e85c9875ce7459a9aa16b805805b85
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diff --git a/Day41-55/code/hellodjango/templates/demo/home.html b/Day41-55/code/hellodjango/templates/demo/home.html
new file mode 100644
index 0000000000000000000000000000000000000000..ea2c9584c0d00f2a8fdc94678a3f52d9227121e9
--- /dev/null
+++ b/Day41-55/code/hellodjango/templates/demo/home.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+{% load staticfiles %}
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>讲师信息</title>
+</head>
+<body>
+    {% for x in teachers_list %}
+        <h1>{{ x.name }}老师 - {{ x.job }}</h1>
+        <p><strong>讲师简介</strong></p>
+        <p>{{ x.intro }}</p>
+        <p><strong>教学理念</strong></p>
+        <p>{{ x.motto }}</p>
+        <p>
+            {% if x.photo %}
+            <img src="{% static x.photo %}">
+            {% endif %}
+        </p>
+        <hr>
+    {% endfor %}
+</body>
+</html>
\ No newline at end of file
diff --git a/Day41-55/shop/cart/migrations/__init__.py b/Day41-55/code/oa/hrs/__init__.py
similarity index 100%
rename from Day41-55/shop/cart/migrations/__init__.py
rename to Day41-55/code/oa/hrs/__init__.py
diff --git a/Day41-55/oa/hrs/admin.py b/Day41-55/code/oa/hrs/admin.py
similarity index 100%
rename from Day41-55/oa/hrs/admin.py
rename to Day41-55/code/oa/hrs/admin.py
diff --git a/Day41-55/oa/hrs/apps.py b/Day41-55/code/oa/hrs/apps.py
similarity index 100%
rename from Day41-55/oa/hrs/apps.py
rename to Day41-55/code/oa/hrs/apps.py
diff --git a/Day41-55/oa/hrs/migrations/0001_initial.py b/Day41-55/code/oa/hrs/migrations/0001_initial.py
similarity index 100%
rename from Day41-55/oa/hrs/migrations/0001_initial.py
rename to Day41-55/code/oa/hrs/migrations/0001_initial.py
diff --git a/Day41-55/oa/hrs/migrations/0002_auto_20180523_0923.py b/Day41-55/code/oa/hrs/migrations/0002_auto_20180523_0923.py
similarity index 100%
rename from Day41-55/oa/hrs/migrations/0002_auto_20180523_0923.py
rename to Day41-55/code/oa/hrs/migrations/0002_auto_20180523_0923.py
diff --git a/Day41-55/oa/hrs/migrations/0003_auto_20180524_1646.py b/Day41-55/code/oa/hrs/migrations/0003_auto_20180524_1646.py
similarity index 100%
rename from Day41-55/oa/hrs/migrations/0003_auto_20180524_1646.py
rename to Day41-55/code/oa/hrs/migrations/0003_auto_20180524_1646.py
diff --git a/Day41-55/shop_origin/cart/__init__.py b/Day41-55/code/oa/hrs/migrations/__init__.py
similarity index 100%
rename from Day41-55/shop_origin/cart/__init__.py
rename to Day41-55/code/oa/hrs/migrations/__init__.py
diff --git a/Day41-55/oa/hrs/models.py b/Day41-55/code/oa/hrs/models.py
similarity index 100%
rename from Day41-55/oa/hrs/models.py
rename to Day41-55/code/oa/hrs/models.py
diff --git a/Day41-55/shop/cart/tests.py b/Day41-55/code/oa/hrs/tests.py
similarity index 100%
rename from Day41-55/shop/cart/tests.py
rename to Day41-55/code/oa/hrs/tests.py
diff --git a/Day41-55/oa/hrs/urls.py b/Day41-55/code/oa/hrs/urls.py
similarity index 100%
rename from Day41-55/oa/hrs/urls.py
rename to Day41-55/code/oa/hrs/urls.py
diff --git a/Day41-55/oa/hrs/views.py b/Day41-55/code/oa/hrs/views.py
similarity index 100%
rename from Day41-55/oa/hrs/views.py
rename to Day41-55/code/oa/hrs/views.py
diff --git a/Day41-55/oa/manage.py b/Day41-55/code/oa/manage.py
similarity index 100%
rename from Day41-55/oa/manage.py
rename to Day41-55/code/oa/manage.py
diff --git a/Day41-55/shop/shop/__init__.py b/Day41-55/code/oa/oa/__init__.py
similarity index 100%
rename from Day41-55/shop/shop/__init__.py
rename to Day41-55/code/oa/oa/__init__.py
diff --git a/Day41-55/oa/oa/settings.py b/Day41-55/code/oa/oa/settings.py
similarity index 100%
rename from Day41-55/oa/oa/settings.py
rename to Day41-55/code/oa/oa/settings.py
diff --git a/Day41-55/oa/oa/urls.py b/Day41-55/code/oa/oa/urls.py
similarity index 100%
rename from Day41-55/oa/oa/urls.py
rename to Day41-55/code/oa/oa/urls.py
diff --git a/Day41-55/oa/oa/wsgi.py b/Day41-55/code/oa/oa/wsgi.py
similarity index 100%
rename from Day41-55/oa/oa/wsgi.py
rename to Day41-55/code/oa/oa/wsgi.py
diff --git a/Day41-55/oa/static/css/bootstrap.min.css b/Day41-55/code/oa/static/css/bootstrap.min.css
similarity index 100%
rename from Day41-55/oa/static/css/bootstrap.min.css
rename to Day41-55/code/oa/static/css/bootstrap.min.css
diff --git a/Day41-55/oa/static/images/mm.jpg b/Day41-55/code/oa/static/images/mm.jpg
similarity index 100%
rename from Day41-55/oa/static/images/mm.jpg
rename to Day41-55/code/oa/static/images/mm.jpg
diff --git a/Day41-55/oa/static/js/bootstrap.min.js b/Day41-55/code/oa/static/js/bootstrap.min.js
similarity index 100%
rename from Day41-55/oa/static/js/bootstrap.min.js
rename to Day41-55/code/oa/static/js/bootstrap.min.js
diff --git a/Day41-55/oa/static/js/jquery.min.js b/Day41-55/code/oa/static/js/jquery.min.js
similarity index 100%
rename from Day41-55/oa/static/js/jquery.min.js
rename to Day41-55/code/oa/static/js/jquery.min.js
diff --git a/Day41-55/oa/templates/dept.html b/Day41-55/code/oa/templates/dept.html
similarity index 100%
rename from Day41-55/oa/templates/dept.html
rename to Day41-55/code/oa/templates/dept.html
diff --git a/Day41-55/oa/templates/emp.html b/Day41-55/code/oa/templates/emp.html
similarity index 100%
rename from Day41-55/oa/templates/emp.html
rename to Day41-55/code/oa/templates/emp.html
diff --git a/Day41-55/oa/templates/index.html b/Day41-55/code/oa/templates/index.html
similarity index 100%
rename from Day41-55/oa/templates/index.html
rename to Day41-55/code/oa/templates/index.html
diff --git a/Day41-55/shop_origin/cart/migrations/__init__.py b/Day41-55/code/shop/cart/__init__.py
similarity index 100%
rename from Day41-55/shop_origin/cart/migrations/__init__.py
rename to Day41-55/code/shop/cart/__init__.py
diff --git a/Day41-55/shop/cart/admin.py b/Day41-55/code/shop/cart/admin.py
similarity index 100%
rename from Day41-55/shop/cart/admin.py
rename to Day41-55/code/shop/cart/admin.py
diff --git a/Day41-55/shop/cart/apps.py b/Day41-55/code/shop/cart/apps.py
similarity index 100%
rename from Day41-55/shop/cart/apps.py
rename to Day41-55/code/shop/cart/apps.py
diff --git a/Day41-55/shop/cart/migrations/0001_initial.py b/Day41-55/code/shop/cart/migrations/0001_initial.py
similarity index 100%
rename from Day41-55/shop/cart/migrations/0001_initial.py
rename to Day41-55/code/shop/cart/migrations/0001_initial.py
diff --git a/Day41-55/code/shop/cart/migrations/__init__.py b/Day41-55/code/shop/cart/migrations/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/Day41-55/shop/cart/models.py b/Day41-55/code/shop/cart/models.py
similarity index 100%
rename from Day41-55/shop/cart/models.py
rename to Day41-55/code/shop/cart/models.py
diff --git a/Day41-55/shop_origin/cart/tests.py b/Day41-55/code/shop/cart/tests.py
similarity index 100%
rename from Day41-55/shop_origin/cart/tests.py
rename to Day41-55/code/shop/cart/tests.py
diff --git a/Day41-55/shop/cart/views.py b/Day41-55/code/shop/cart/views.py
similarity index 100%
rename from Day41-55/shop/cart/views.py
rename to Day41-55/code/shop/cart/views.py
diff --git a/Day41-55/shop/manage.py b/Day41-55/code/shop/manage.py
similarity index 100%
rename from Day41-55/shop/manage.py
rename to Day41-55/code/shop/manage.py
diff --git a/Day41-55/code/shop/shop/__init__.py b/Day41-55/code/shop/shop/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..9c0f75627493779a57ce48f0b76e35cc87b8984a
--- /dev/null
+++ b/Day41-55/code/shop/shop/__init__.py
@@ -0,0 +1,3 @@
+import pymysql
+
+pymysql.install_as_MySQLdb()
diff --git a/Day41-55/shop/shop/settings.py b/Day41-55/code/shop/shop/settings.py
similarity index 100%
rename from Day41-55/shop/shop/settings.py
rename to Day41-55/code/shop/shop/settings.py
diff --git a/Day41-55/shop/shop/urls.py b/Day41-55/code/shop/shop/urls.py
similarity index 100%
rename from Day41-55/shop/shop/urls.py
rename to Day41-55/code/shop/shop/urls.py
diff --git a/Day41-55/shop/shop/wsgi.py b/Day41-55/code/shop/shop/wsgi.py
similarity index 100%
rename from Day41-55/shop/shop/wsgi.py
rename to Day41-55/code/shop/shop/wsgi.py
diff --git a/Day41-55/shop/static/images/dolbee.jpg b/Day41-55/code/shop/static/images/dolbee.jpg
similarity index 100%
rename from Day41-55/shop/static/images/dolbee.jpg
rename to Day41-55/code/shop/static/images/dolbee.jpg
diff --git a/Day41-55/shop/static/images/lay.jpg b/Day41-55/code/shop/static/images/lay.jpg
similarity index 100%
rename from Day41-55/shop/static/images/lay.jpg
rename to Day41-55/code/shop/static/images/lay.jpg
diff --git a/Day41-55/shop/static/images/noodle.jpg b/Day41-55/code/shop/static/images/noodle.jpg
similarity index 100%
rename from Day41-55/shop/static/images/noodle.jpg
rename to Day41-55/code/shop/static/images/noodle.jpg
diff --git a/Day41-55/shop/static/images/oil.jpg b/Day41-55/code/shop/static/images/oil.jpg
similarity index 100%
rename from Day41-55/shop/static/images/oil.jpg
rename to Day41-55/code/shop/static/images/oil.jpg
diff --git a/Day41-55/shop/static/images/wang.jpg b/Day41-55/code/shop/static/images/wang.jpg
similarity index 100%
rename from Day41-55/shop/static/images/wang.jpg
rename to Day41-55/code/shop/static/images/wang.jpg
diff --git a/Day41-55/shop/static/images/wine.jpg b/Day41-55/code/shop/static/images/wine.jpg
similarity index 100%
rename from Day41-55/shop/static/images/wine.jpg
rename to Day41-55/code/shop/static/images/wine.jpg
diff --git a/Day41-55/shop/templates/cart.html b/Day41-55/code/shop/templates/cart.html
similarity index 100%
rename from Day41-55/shop/templates/cart.html
rename to Day41-55/code/shop/templates/cart.html
diff --git a/Day41-55/shop/templates/goods.html b/Day41-55/code/shop/templates/goods.html
similarity index 100%
rename from Day41-55/shop/templates/goods.html
rename to Day41-55/code/shop/templates/goods.html
diff --git a/Day41-55/code/shop_origin/cart/__init__.py b/Day41-55/code/shop_origin/cart/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/Day41-55/shop_origin/cart/admin.py b/Day41-55/code/shop_origin/cart/admin.py
similarity index 100%
rename from Day41-55/shop_origin/cart/admin.py
rename to Day41-55/code/shop_origin/cart/admin.py
diff --git a/Day41-55/shop_origin/cart/apps.py b/Day41-55/code/shop_origin/cart/apps.py
similarity index 100%
rename from Day41-55/shop_origin/cart/apps.py
rename to Day41-55/code/shop_origin/cart/apps.py
diff --git a/Day41-55/shop_origin/cart/migrations/0001_initial.py b/Day41-55/code/shop_origin/cart/migrations/0001_initial.py
similarity index 100%
rename from Day41-55/shop_origin/cart/migrations/0001_initial.py
rename to Day41-55/code/shop_origin/cart/migrations/0001_initial.py
diff --git a/Day41-55/code/shop_origin/cart/migrations/__init__.py b/Day41-55/code/shop_origin/cart/migrations/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/Day41-55/shop_origin/cart/models.py b/Day41-55/code/shop_origin/cart/models.py
similarity index 100%
rename from Day41-55/shop_origin/cart/models.py
rename to Day41-55/code/shop_origin/cart/models.py
diff --git a/Day41-55/code/shop_origin/cart/tests.py b/Day41-55/code/shop_origin/cart/tests.py
new file mode 100644
index 0000000000000000000000000000000000000000..7ce503c2dd97ba78597f6ff6e4393132753573f6
--- /dev/null
+++ b/Day41-55/code/shop_origin/cart/tests.py
@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.
diff --git a/Day41-55/shop_origin/cart/views.py b/Day41-55/code/shop_origin/cart/views.py
similarity index 100%
rename from Day41-55/shop_origin/cart/views.py
rename to Day41-55/code/shop_origin/cart/views.py
diff --git a/Day41-55/shop_origin/manage.py b/Day41-55/code/shop_origin/manage.py
old mode 100755
new mode 100644
similarity index 100%
rename from Day41-55/shop_origin/manage.py
rename to Day41-55/code/shop_origin/manage.py
diff --git a/Day41-55/shop_origin/shop/__init__.py b/Day41-55/code/shop_origin/shop/__init__.py
similarity index 100%
rename from Day41-55/shop_origin/shop/__init__.py
rename to Day41-55/code/shop_origin/shop/__init__.py
diff --git a/Day41-55/shop_origin/shop/settings.py b/Day41-55/code/shop_origin/shop/settings.py
similarity index 100%
rename from Day41-55/shop_origin/shop/settings.py
rename to Day41-55/code/shop_origin/shop/settings.py
diff --git a/Day41-55/shop_origin/shop/urls.py b/Day41-55/code/shop_origin/shop/urls.py
similarity index 100%
rename from Day41-55/shop_origin/shop/urls.py
rename to Day41-55/code/shop_origin/shop/urls.py
diff --git a/Day41-55/shop_origin/shop/wsgi.py b/Day41-55/code/shop_origin/shop/wsgi.py
similarity index 100%
rename from Day41-55/shop_origin/shop/wsgi.py
rename to Day41-55/code/shop_origin/shop/wsgi.py
diff --git a/Day41-55/shop_origin/shop_create_sql.sql b/Day41-55/code/shop_origin/shop_create_sql.sql
similarity index 100%
rename from Day41-55/shop_origin/shop_create_sql.sql
rename to Day41-55/code/shop_origin/shop_create_sql.sql
diff --git a/Day41-55/shop_origin/static/images/dolbee.jpg b/Day41-55/code/shop_origin/static/images/dolbee.jpg
similarity index 100%
rename from Day41-55/shop_origin/static/images/dolbee.jpg
rename to Day41-55/code/shop_origin/static/images/dolbee.jpg
diff --git a/Day41-55/shop_origin/static/images/lay.jpg b/Day41-55/code/shop_origin/static/images/lay.jpg
similarity index 100%
rename from Day41-55/shop_origin/static/images/lay.jpg
rename to Day41-55/code/shop_origin/static/images/lay.jpg
diff --git a/Day41-55/shop_origin/static/images/noodle.jpg b/Day41-55/code/shop_origin/static/images/noodle.jpg
similarity index 100%
rename from Day41-55/shop_origin/static/images/noodle.jpg
rename to Day41-55/code/shop_origin/static/images/noodle.jpg
diff --git a/Day41-55/shop_origin/static/images/oil.jpg b/Day41-55/code/shop_origin/static/images/oil.jpg
similarity index 100%
rename from Day41-55/shop_origin/static/images/oil.jpg
rename to Day41-55/code/shop_origin/static/images/oil.jpg
diff --git a/Day41-55/shop_origin/static/images/wang.jpg b/Day41-55/code/shop_origin/static/images/wang.jpg
similarity index 100%
rename from Day41-55/shop_origin/static/images/wang.jpg
rename to Day41-55/code/shop_origin/static/images/wang.jpg
diff --git a/Day41-55/shop_origin/static/images/wine.jpg b/Day41-55/code/shop_origin/static/images/wine.jpg
similarity index 100%
rename from Day41-55/shop_origin/static/images/wine.jpg
rename to Day41-55/code/shop_origin/static/images/wine.jpg
diff --git a/Day41-55/shop_origin/templates/cart.html b/Day41-55/code/shop_origin/templates/cart.html
similarity index 100%
rename from Day41-55/shop_origin/templates/cart.html
rename to Day41-55/code/shop_origin/templates/cart.html
diff --git a/Day41-55/shop_origin/templates/goods.html b/Day41-55/code/shop_origin/templates/goods.html
similarity index 100%
rename from Day41-55/shop_origin/templates/goods.html
rename to Day41-55/code/shop_origin/templates/goods.html