So which one should you join? Well, if you're unsure, start with the Slack community. If you're not familiar with Slack, one could say that Slack is to workplaces what Discord is to gaming. It's easy to use, and you don't have to download anything to use it (although, from a phone it's better to just download the Slack app).
On our Slack community, we have a few channels set up.
#general is our main channel.
#help is a channel where you can ask for Python-related help.
#random is for anything off-topic that you might want to discuss with our other users. Games, cars, movies - whatever.
#website-updates is where we post info about changes we make to this website (to avoid spamming #general with it).
If you want to get in contact with other Python users in the Fediverse, please feel free to join our Fediverse community PythonDevs.social.
To join PythonDevs.social, just click on the link and register an account. If you want to learn more about the Fediverse, feel free to read our blog post about it. The short version is that the Fediverse is a largely Open Source-based social network. Imagine if Facebook, Twitter and YouTube were all Open Source, and Facebook users could message Twitter users, and vice versa. That is sort of what the Fediverse is. Think of our Fediverse community as Twitter for Python users.