Windows Section

First Step

Search for Python on baidu, or go directly to the Python official website [https://www.python.org](https://www.python.org/]

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Second Step

Find the Download button at the top of the webpage, hover the mouse over it (Note: Do not click), and select the Windows version

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Third Step

Choose the latest stable version on the page, find Download Windows x86-64 executable installer, and note that it must be the installer for automatic installation

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Click directly to download

Fourth Step

Double-click to install

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On the installation interface, make sure to check the box Add Python to PATH, then click Install Now

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Wait for the installation to complete, and click Close on the final interface

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Testing

Write a program to test it

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Nice!

Linux Section

First Step

Enter the following command to update the software source.

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sudo apt-get update

This command is applicable for Ubuntu\Debian (remove sudo if needed)

Second Step

Enter the following command to install Python.

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sudo apt-get install python3

This command is applicable for Ubuntu\Debian (remove sudo). If installation fails, consider changing the Linux source.

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yum install python3

This command is applicable for CentOS

Third Step

Enter Python3 to check the installed version

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python3 -V

Fourth Step

Common commands for Linux

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touch new.py # Create a new Python program
vim new.py   # Use the vim compiler to write code
python new.py   # Run the Python program

If the system does not have vim, use the following commands to install

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sudo apt-get install vim   # Ubuntu
yum install vim   # CentOS

The usage of vim can be checked independently. I believe, those familiar with Linux are not unfamiliar with vim

Fifth Step

When writing a Python program, make sure to add the following code at the beginning of the program to indicate the directory of the Python interpreter.

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#!/usr/bin/env python
# -*- coding: UTF-8 -*-