1.报错内容：
django.core.exceptions.ImproperlyConfigured: mysqlclient 1.3.13 or newer is required; you have 0.9.3.
原因：django2.2和pymysql版本不匹配。mysqldb不支持python3解决方案：
两个错误会同时出现
1、raise ImproperlyConfigured(‘mysqlclient 1.3.13 or newer is required; you have %s.’ % Database.version)
django.core.exceptions.ImproperlyConfigured: mysqlclient 1.3.13 or newer is required; you have 0.9.3.
解决办法：
C:\Python37\Lib\site-packages\django\db\backends\mysql（python安装目录）打开base.py，注释掉以下内容： if version < (1, 3, 13):
raise ImproperlyConfigured(‘mysqlclient 1.3.13 or newer is required; you have %s.’ % Database.version)
2、AttributeError: ‘str’ object has no attribute ‘decode’
File “C:\Python37\lib\site-packages\django\db\backends\mysql\operations.py”, line 146, in last_executed_query
query = query.decode(errors=‘replace’)
解决办法：
打开此文件把146行的decode修改为encode