The latest version of python download and installation guide reference
Download website: (1) Windows version
(2) Macos version:
(3) Other platform versions
What we download here is python.exe file/python executable file (executable installer) 
We download the latest version of python3.8.4rc1, of course This version is only applicable to versions above Windows XP
Enter python on the command line to enter the interactive interface, indicating that the installation is successful.
Let’s use the IDLE integrated development environment about Xiaobai: we can find the IDLE shortcut in the windows "start" menu and click to open
