Under Windows, it should be changed C:users用户名pippip.inihere
If there is no directory, create a new one.

Pycharm is just an IDE. You can install the packages you need directly in the console through pip or easy_install, which does not affect your use

Thanks for the invitation! I also encountered this problem two days ago. The approximate solution is as follows:
Create .pipdirectory under ~/, and then create the pip.conf file

[global]
index-url = http://pypi.douban.com/simple
trusted-host = pypi.douban.com

I’m not sure about the Windows directory

Don’t do anything after Invalidate Caches/Restar. Watch the data in the lower right corner of it re-index. Wait until it is indexed and see if it works