how to use python command line windows
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The Python command line, also known as the Python REPL (Read-Eval-Print Loop) or interactive interpreter, provides a powerful way to interact with Python directly from the Windows Command Prompt. In this tutorial, we will explore various aspects of using Python from the command line, including running scripts, working with modules, and utilizing command-line arguments.
Before using the Python command line on Windows, you need to ensure that Python is installed on your system. You can download the latest version of Python from the official website python.org.
During installation, make sure to check the box that says "Add Python to PATH" to make it easier to run Python from the command line.
To open the Python command line on Windows, follow these steps:
Open the Command Prompt:
Type python or python3:
You should now see the Python prompt (), indicating that you are in interactive mode.
To run Python scripts from the command line, you need to create a Python file with a .py extension. Here's a simple example:
Create a Python Script:
Open a text editor (e.g., Notepad, VS Code, or any IDE of your choice).
Write a simple Python script, for example:
Save the file as hello.py.
Run the Python Script:
Python modules are reusable pieces of code that can be imported into scripts. Let's create a simple module and use it in a script:
Create a Module:
Open a text editor.
Write a Python module, for example:
Save the file as mymodule.py.
Use the Module in a Script:
Create a new Python script, for example:
Save the file as use_module.py.
Run the script using python use_module.py.
Python scripts can accept command-line arguments. Here's a brief example:
Modify the Script to Accept Arguments:
Run the Script with Arguments:
This tutorial covers the basics of using the Python command line on Windows, from running simple scripts to working with modules and command-line arguments. Experiment with these concepts to deepen your understanding of Python's command-line capabilities.
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