Pycharm

更新pip

python -m pip install --upgrade pip

如果这条命令执行后，依然提示要更新pip，就参考https://www.jianshu.com/p/6453e3353694即可。

pip安装超时

参考https://blog.csdn.net/qq_39161804/article/details/81191977

pip安装时显示找不到包

方法1. 升级pip再安装

方法2：下载后，离线安装https://www.lfd.uci.edu/~gohlke/pythonlibs

创建requirements

pip freeze >  requirements.txt

import自定义module

https://stackoverflow.com/questions/21236824/unresolved-reference-issue-in-pycharm

File-Settings-Build,Execution,Deployment-Console-Python Console-勾选链接中两个勾勾