Download a current Version of python.org (get the Windows x86-64 executable installer).
Install it by navigating to Downloads and double klicking the downloaded .exe File.
Make shure you checked the box Add Python 3.8 to PATH
Click Install Now
Disable the pathelength limitation of windows (if not already done)
2. Install Git
Download Git from git-scm.com and install it. The default options are a good startpoint, but make sure to select the following options on these 3 install screens:
3. In VS Code
Restart VS Code and follow the hints given by the notifications. Click Install when you are prompted to install Python.
Apple OSX
1. Install Homebrew
Open a Terminal (search for Terminal in the Spotlight: ⌘ + Leertaste) and execute the following command. You may be prompted for your computer password.