1.python3下出现问题(首先安装pymysql与mysqlclient)：
django.core.exceptions.ImproperlyConfigured: mysqlclient 1.3.13 or newer is required; you have 0.9.3.
解决方法：
在项目的__init__.py文件中添加如下内容：
import pymysql
pymysql.version_info = (1, 3, 13, "final", 0)
pymysql.install_as_MySQLdb()
2. RuntimeError: cryptography is required for sha256_password or caching_sha2_password
解决方法：
pip install cryptography
3. building 'MySQLdb._mysql' extension
error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual
C++ Build Tools": https://visualstudio.microsoft.com/downloads/
----------------------------------------
ERROR: Command errored out with exit status 1: 'd:softwareinstallpythonpython
38-32python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:
\Windows\Temp\pip-install-3oczd27q\mysqlclient\setup.py'"'"'; __file__='"'"
'C:\Windows\Temp\pip-install-3oczd27q\mysqlclient\setup.py'"'"';f=getattr(t
okenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'
'"'"', '
"'"'
'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --
record 'C:WindowsTemppip-record-1k5s4hqninstall-record.txt' --single-version
-externally-managed --compile --install-headers 'd:softwareinstallpythonpytho
n38-32Includemysqlclient' Check the logs for full command output.
解决方法：
这个地址下载自己版本对应的资源
https://www.lfd.uci.edu/~gohlke/pythonlibs/#mysqlclient
然后执行pip install mysqlclient-1.4.6-cp38-cp38-win32.whl
参考内容：
a) https://blog.csdn.net/weixin_45476498/article/details/100098297
b) https://blog.csdn.net/lpw_cn/article/details/103978909
c) mysqlclient安装问题： https://blog.csdn.net/cn_1937/article/details/81533544