Solving the ModuleNotFoundError for Pygame in Python 3.9 on Raspberry Pi

Описание: Learn how to resolve the `ModuleNotFoundError` for Pygame after upgrading to Python 3.9 on your Raspberry Pi. Follow these step-by-step instructions for a smooth setup.
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This video is based on the question https://stackoverflow.com/q/67879601/ asked by the user 'Lucas Dahl' ( https://stackoverflow.com/u/10231594/ ) and on the answer https://stackoverflow.com/a/67879645/ provided by the user 'Tim Roberts' ( https://stackoverflow.com/u/1883316/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Addressing the ModuleNotFoundError for Pygame in Python 3.9 on Raspberry Pi

Upgrading your Python installation can be an exciting venture. However, it can also come with unforeseen complications, especially when it comes to using libraries like Pygame. If you've recently upgraded to Python 3.9.0 and are facing the frustrating ModuleNotFoundError: No module named 'pygame', you're not alone. This issue usually arises because after upgrading to a new major version of Python, previous packages become unavailable until they are reinstalled. Let's break down how to resolve this issue effectively.

The Problem: Understanding the ModuleNotFoundError

When you upgraded from Python 3.4.2 to 3.9.0, your current environment may still be looking for the Pygame module in the old Python installation. Each Python version maintains its own set of libraries and modules, and without the right setup, newly installed versions will not recognize previously installed packages.

Symptoms of the Problem

Error Message: ModuleNotFoundError: No module named 'pygame'

Unable to run Pygame scripts or apps: Any attempt to utilize Pygame or related functionalities fails with the above error.

The Solution: Reinstalling Pygame for Python 3.9

To get Pygame working again in your upgraded Python environment, you'll need to reinstall Pygame using pip3. Follow these steps for a smooth installation:

Step 1: Open Terminal

Launch the terminal on your Raspberry Pi. You can usually find it on the taskbar or through the application menu.

Step 2: Check Python and PIP Versions

Run the following commands to ensure you are using Python 3.9 and the correct version of pip:

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You should see output indicating that Python 3.9.0 is installed.

Make sure that pip3 is associated with Python 3.9. If it shows a different version, you may need to adjust your PATH or install the correct pip version.

Step 3: Install Pygame

Now, use pip3 to install or reinstall Pygame:

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This command will fetch the latest version of Pygame compatible with Python 3.9 and install it.

Step 4: Verify Installation

Once the installation is complete, it’s a good practice to verify if Pygame is installed correctly:

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This should launch a simple Pygame example if everything installed correctly.

Conclusion: Keep Your Python Environment Up to Date

Upgrading Python can unlock new features and improvements for your projects, but it also requires some maintenance tasks such as reinstalling your preferred packages. By following the simple steps outlined above, you can resolve the ModuleNotFoundError for Pygame and get back to creating games or applications on your Raspberry Pi.

Remember, frequently check your package installations after Python upgrades to ensure everything runs smoothly. Happy coding!