电脑环境macOS Python版本2.7和3.7.4

数据库MySQL

工具pycharm

操作:

我根据"程序配置说明.docx",第5步第4点中使用migrate创建数据表中的命令创建数据表(命令如下),报ModuleNotFoundError: No module named 'flask_sqlalchemy'的错误,然后我用pip/pip3 install SQLAlchemy命令安装,显示安装成功了,但是还是报这个错误.后来我在pycharm点击run运行程序,报KeyError: <flask.cli.ScriptInfo object at 0x10ea7a450>错误. 目前我不知道怎么解决,麻烦老师帮我看看,怎么解决.谢谢.

python  manage.py  db  init

我本地Python环境

export PATH=${PATH}:/usr/local/mysql/bin

# Setting PATH for Python 2.7

PATH="/System/Library/Frameworks/Python.framework/Versions/2.7/bin:${PATH}"

export PATH

# Setting PATH for Python 3.7.4

PATH="/usr/local/Cellar/python/3.7.4/bin:${PATH}"

alias python2='/System/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7'

alias python3='/usr/local/Cellar/python/3.7.4/bin/python3.7'

alias python=python3

#export PATH=${PATH}:/usr/local/Cellar/python/3.7.4/bin

#export PATH=${PATH}:/System/Library/Frameworks/Python.framework/Versions/2.7/bin

export WORKON_HOME=~/python/pyEnv

VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3

source /usr/local/bin/virtualenvwrapper.sh

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