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解决方法pip3安装python3.x对应的包pip安装会提示成功但是代码运行还是找不到包用pip3安装就一切正常。pip3 install -i https://pypi.douban.com/simple/ --upgrade sqlalchemy-migrate0.10.0 Flask项目从python2.x升级到python3.6，报错ImportError: No module named migrate.versioning?
解决方法pip3安装python3.x对应的包pip安装会提示成功但是代码运行还是找不到包用pip3安装就一切正常。pip3 install -i https://pypi.douban.com/simple/ --upgrade sqlalchemy-migrate0.10.0