这是本地环境中没有安装C++的环境，安装好后再次运行报错：
国内网站上找了半天，试了又试，不能根本上解决问题，最后从国外的网站上找到的：
下载安装MariaDB C Connector，地址：Download MariaDB Connectors for data access & analysis | MariaDB，
安装到默认路径下，关闭重新打开cmd，输入:pip install mysqlclient
经过测试，后续连接数据库没有任何问题
- mysqlclient toml-based pyproject required projectsmysqlclient toml-based pyproject required toml-based pyproject required projects toml-based pyproject wordcloud projects toml-based pyproject pyproject toml opencv-python pyproject building命令 mysqlclient mysqlclient install library found commandbehavior executereader mysqlcommand mysqlclient