To check the Python version on different operating systems, you can use the command line or terminal. Here’s how to do it on Windows, Mac, and Linux:

  1. Windows:
    • Open the command prompt by pressing Win + R, typing cmd, and hitting Enter.
    • In the command prompt, type python --version or python -V and press Enter.
    • The Python version installed on your Windows system will be displayed.
  2. Mac:
    • Open the Terminal application. You can find it in the Applications folder under Utilities.
    • In the terminal, type python --version or python -V and press Enter.
    • The Python version installed on your Mac will be displayed.
  3. Linux:
    • Open the terminal. You can usually find it in the applications menu or use the keyboard shortcut Ctrl + Alt + T.
    • In the terminal, type python --version or python -V and press Enter.
    • The Python version installed on your Linux system will be displayed.

The command python --version or python -V displays the Python version installed as per your system’s PATH environment variable. If you have multiple Python installations, the command will display the version of the default Python interpreter.

Note: If you have both Python 2 and Python 3 installed on your system, you might need to use python3 --version or python3 -V to check the version of Python 3 specifically.

Alternatively, you can run a Python script to check the version. Create a new text file, enter the following line, and save it with a .py extension (e.g., version_check.py):

import sys
print(sys.version)

Then, open the command prompt or terminal, navigate to the directory containing the script, and run python version_check.py to see the Python version.

These methods should help you determine the Python version installed on your Windows, Mac, or Linux system.