Installing and Configuring Python

Last updated: 2021-08-31 17:37:46

    This document describes how to install Python for different operating systems.

    Using an Installation Package

    1. Download a package

    Go to Python to download an installation package according to your OS.

    Note:

    Python has dropped support for Python 2 since January 1, 2020. Therefore, you are advised to install Python 3.

    2. Install the package

    Install the downloaded package as instructed.

    Note:

    If you use Windows, check Add Python to environment variables.

    3. Verify the installation

    Run the following command in Terminal to view the Python version:

    python -V
    

    If the Python version is displayed, Python has been installed successfully.

    Note:

    If you use Windows, you may need to restart your computer after the installation.

    4. Configure the environment variable

    In Windows, if “not recognized as an internal or external command” is reported in Terminal after the command above is run, right-click the Computer icon, click Properties > Advanced system settings > Environment Variables, and in the System variables area, click New to add the Python installation path, as shown in the following figure:

    Using a Package Manager

    macOS

    Install HomeBrew first and use it to install Python:

    brew install python
    

    Ubuntu

    Use the built-in Advanced Packaging Tool (APT) to install Python:

    sudo apt-get install python
    

    CentOS

    Use the built-in Yellowdog Update, Modified (YUM) to install Python:

    sudo yum install -y python