ModuleNotFoundError: No module named 'MySQLdb'

解决办法：

 pip install mysqlclient       

 如果报错：

    /bin/sh: 1: mysql_config: not found
    /bin/sh: 1: mariadb_config: not found
    /bin/sh: 1: mysql_config: not found
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-jw9jddys/mysqlclient/setup.py", line 15, in <module>
        metadata, options = get_config()
      File "/tmp/pip-install-jw9jddys/mysqlclient/setup_posix.py", line 70, in get_config
        libs = mysql_config("libs")
      File "/tmp/pip-install-jw9jddys/mysqlclient/setup_posix.py", line 31, in mysql_config
        raise OSError("{} not found".format(_mysql_config_path))
    OSError: mysql_config not found
    mysql_config --version
    mariadb_config --version
    mysql_config --libs

请尝试：

sudo apt-get install mysql-server mysql-client
sudo apt-get install libmysqlclient-dev python3-dev