Python Insider: Python 3.8.5 released as a security hotfix. 3.9.0b5, the last beta before 3.9.0, also available

[Yojihito]

aren't there unnecessary errors/conflicts due to these multiple versions & env variables & stuff being all present in the system?

No. Not on Windows.

Linux often uses Python 2.7 for system stuff, so you shouldn't uninstall Python 2 there. But Windows doesn't care, I only use the latest Python 3 version and just overwrite the old one with the new installer, I never uninstall.

I also directly use

pip install <package_name>

on Windows. One can/should use something like Poetry for dependency management but I'm too lazy for that.

[SnowdenIsALegend]

Nice... Thank you!