Python commands not working (Tweepy, shabang, git)

I just started using Python in order to extract Twitter data, using Tweepy. I've had trouble installing pip, but got around it. Had trouble with git, but downloaded git and got around it. But when i try the import function in python to import tweepy, it gives an error message.

So people say you need the shabang thing, but it won't recognize the #!... I just don't know what to do anymore.

Any suggestions?