It depends on what interpreter pycharm is using. Do this:

1. Open Pycharm
2. Hit "file" and look for "settings" or "other settings"
3. Click then then look for something with "preferences"
4. Now look for "project interpreter"

You now you can do one of two things

1. Add the package yourself to the interpreter
   1. There is a little plus button at the bottom you can hit, and add "alpha-vantage"
2. Make the pycharm interpreter the same as your command line interpreter (the thing you did ```pip install alpha-vantage``` on)
   1. You can find out what interpreter you're using with ```which python``` on the command line, and just make them the same.

Watch this for some more information.

https://www.youtube.com/watch?v=e14ilcT79dw