How to Run Python Scripts and Programs in CMD: A Step-by-Step Guide

Summary: Discover how to run Python scripts and programs in the command prompt with this detailed guide. Learn the simple steps to execute `.py` files effectively.
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How to Run Python Scripts and Programs in CMD: A Step-by-Step Guide

For Python programmers, knowing how to run Python scripts and programs in the command prompt (CMD) is an essential skill. Whether you're a beginner or a seasoned developer, the command prompt provides a straightforward environment to execute your .py files efficiently. This guide will walk you through various methods to run your Python code using CMD.

Prerequisites

Before diving into the steps, ensure you have the following prerequisites:

Python Installed: Make sure Python is installed on your system. You can download it from the official Python website.

Environment Variable Set: Ensure Python is added to the environment variable path during installation. This allows you to run Python commands from any directory in CMD.

Running a Python Script in CMD

Step 1: Open Command Prompt

First, you'll need to open the Command Prompt:

On Windows, press Win + R, type cmd, and press Enter.

Alternatively, you can search for cmd in the Start menu and click on Command Prompt.

Step 2: Navigate to the Script’s Directory

Use the cd command to navigate to the directory where your Python script (.py file) is located. For example, if your script is stored in C:\MyPythonScripts, you would enter:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Run the Python Script

Once you're in the correct directory, you can run your Python script by typing:

[[See Video to Reveal this Text or Code Snippet]]

Replace script_name.py with the actual name of your Python script.

Example

If you have a Python script named example.py, you would type:

[[See Video to Reveal this Text or Code Snippet]]

After pressing Enter, CMD will execute the script and display any output generated by the script.

Running a Python Program in CMD

Running a Python program is similar to running a script. Here's how:

Open Command Prompt as described earlier.

Navigate to the directory containing your .py file using the cd command.

Run the Program by typing python program_name.py and press Enter.

Additional Tips

Python3 Command: If you have installed both Python 2.x and Python 3.x, you may need to use python3 instead of python to differentiate between versions. For example:

[[See Video to Reveal this Text or Code Snippet]]

Virtual Environments: If your project uses a virtual environment, activate it before running your script. This ensures that the correct dependencies are used.

[[See Video to Reveal this Text or Code Snippet]]

Error Handling: If you encounter an error stating that python is not recognized, verify that Python is correctly installed and added to the system path.

Conclusion

Running Python scripts and programs in the command prompt is a fundamental skill that every Python developer should master. With the steps outlined above, you should be able to execute your .py files efficiently and troubleshoot any issues that may arise. Whether you're working on a quick script or a larger project, CMD offers a flexible and efficient environment for your Python development needs.

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