通过pip install flask-sqlacodegen后使用命令：flask-sqlacodegen "mysql://root:123456@IP:3306/movie_cat" --tables user --outfile "/Users/user/PycharmProjects/flask.study/common/models/user.py" --flask
提示：-bash: flask-sqlacodegen: command not found
查看flask-sqlacodegen安装目录为：
/Library/Frameworks/Python.framework/Versions/3.6/bin
进入到次目录下运行：./flask-sqlacodegen "mysql://root:123456@IP:3306/movie_cat" --tables user --outfile "/Users/user/PycharmProjects/flask.study/common/models/user.py" --flask
运行正常