Hello everyone, let me share with you that the official website of Python is free to download and install. Many people don’t know this yet. Let’s explain it in detail below. Now let’s take a look!
python installation tutorial
1. Log in to the official website to download python, address: https://www.python.org/downloads/windows/ 
Explanation:
x86 is 32-bit, x86-64 is 64-bit.
Choose which version of python to download according to your needs:
web-based installer 是需要通过联网完成安装的；
executable installer 是可执行文件(*.exe)方式安装；
embeddable zip file 嵌入式版本，可以集成到其它应用中Python解释器的安装步骤。
2. Install the python interpreter, check to add the environment variable path, and click Custom Installation. 
3. Check the default page, click the Next button 
4. Customize the path, and then click Install 
5. The installation is completed, the environment variable fails to be written, due to the length limit, add it manually 
6. Open the system variables, and add the python installation in the path The path is as shown in the figure below: 
7. Open cmd and enter python to verify whether it is successful. If the python version number appears, it means success. 
At this point, the python interpreter is successfully installed!