Learn Python. This article introduces why to learn Python and how Python is widely used.

To do a good job, he must sharpen his tools. Before learning Python, you need to build the Python development environment. Python is a cross-platform development tool that can be programmed on multiple operating systems, and written programs can run on different systems. Common operating systems are Windows, Mac OS, and Linux. The Windows operating system is recommended for beginners.

Specific process:

1. In the address box of the browser, enter https://www.python.org/


2. Move the mouse over to the Downloads menu and, if your computer is 32-bit, click Python 3.8.5 on the right to download the installation package. If it is 64-bit, click On Windows and then click on the contents in the red box below (32-bit or 64-bit, right-click “this computer” and click “Properties” to view).

The text in the red box of the first image, Windows XP does not support python3.5 and later

-64 indicates a 64-bit installation package. If no, -64 indicates a 32-bit installation package

  • “Embeddable zip file” — embedded version that can be integrated into other applications
  • “Executable Installer” — offline installation package
  • Web-based Installer – This installation needs to be completed online over the Internet

3. Find the installation file


Double-click to display the installation wizard dialog box


  • The first box is installed by default. The directory cannot be changed. You are not advised to install it in this directory
  • Second box: Select custom installation
  • Third box: Add Python to environment variables

4. Select Add Python 3.8 to PATH and click Customize Installation to Customize the installation, and use the default Settings in the installation options dialog box that is displayed


  • First: Install the Python help documentation
  • Second: Install the tool PIP for downloading Python packages
  • Third: Install Tkinter and IDLE development environment
  • Fourth: Install the standard library test suite
  • Fifth: Install a transmitter that all users can launch Python

5. Click Next. In the dialog box that is displayed, click Browse to set the installation path (based on your own requirements)


6. Click Install to start installing Python. When the installation is complete, the dialog box shown in the following figure is displayed


7. Check whether the installation is successful

Enter CMD in the search box. Enter Python at the command prompt and press Enter. If the following information is displayed, Python is successfully installed

PS: Right click the menu bar, click the properties button, you can adjust the window background color, font size, etc


8. If “python” is not an internal or external command, executable program or batch file “is displayed, this is because Windows looks for the python.exe executable based on the Path set by a Path environment variable. This happens when you leave “Add Python 3.8 to PATH” unchecked during installation and need to configure environment variables yourself.

  • 1) Right click “This Computer”, click “Properties”, click “Advanced System Settings” on the left, and the “System Properties Dialog box” will appear below.

  • 2) Click Environment Variables. The Environment Variables dialog box is displayed

  • 3) Select “Path”, create a new environment variable (the python installation Path on your computer), and click “OK”.

  • 4) Repeat step “7”. The following information is displayed:

C:\Users\Alienware>python
Python 3.8.5 (tags/v3.8.5:580fbb0, Jul 20 2020, 15:57:54) [MSC V. 1924 64-bit (AMD64)] on Win32Type "help"."copyright"."credits" or "license" for more informatio
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If not, try the above steps again.

So far, the initial working environment of Python has been built ！！！！

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