The problem with this question is that I do not the proper words to refer to my problem. Let me be clear about what I’m not asking. I’m not asking how to execute a python file. I can already do that. Simply cd to the director where the Python file is in, then run

>>>python module.py

What I cannot do is the following: on this webpage:

https://github.com/pytube/pytube

You can download the software, then I think you have to put a new line in the bash file and then when you type in command line

$ pytube https://www.youtube.com/playlist?list=PLS1QulWo1RIaJECMeUT4LFwJ-ghgoSH6n

It will execute the module. I don’t know how to do that and am asking how. Doubtlessly, this question is a duplicate but I do not know the proper keywords needed to find the answer to this question. When I google ‘how to execute python modules from command line’, all I get is instructions on how to do just that which I already know how to do.