I'm not very familiar with how discord bots work but there seems plenty of good documentation on their API
https://discord.com/developers/docs/intro

If you really want to stick with using Python it is worth checking out webhooks for discord. Python seems to have a library for that as well:
https://pypi.org/project/discord-webhook/

Python is a interpreted language that runs on a virtual environment, pip is an excellent tool for handling all the necessary packages needed to run a python script.
More information on how to set up a virtual environment:
https://docs.python.org/3/library/venv.html

It is best you try and figure out what you want your bot to do first as there are probably lots of different way to accomplish your goal. In the future it helps to ask more specific questions about what you want your bot to do, which language/libraries you want to use, exactly what the problem you are encountering as well as providing code that you've written. Best of luck!