1.django.core.exceptions.ImproperlyConfigured: mysqlclient 1.3.13 or newer is required; you have 0.9.3.

修改/usr/local/lib/python3.5/dist-packages/django/db/backends/mysql/base.py文件，注释掉：

#if version < (1, 3, 13): 　　　　　　　　　　#raise ImproperlyConfigured(‘mysqlclient 1.3.13 or newer is required; you have %s.‘ % Database.__version__)

2.django.db.utils.OperationalError: (2003, “Can‘t connect to MySQL server on ‘127.0.0.1‘ (111)”

检查服务器是否能连接到数据库，是否有什么限制，eg：端口等等

3.AttributeError: ‘str‘ object has no attribute ‘decode‘

cd /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/Django-2.2-py3.7.egg/django/db/backends/mysqlvim operations.py找到错误代码（line146）：query = query.encode(errors=‘replace‘)解决方法：把decode改为encode即可。保存并退出。