Скачать или смотреть How to Fix ModuleNotFoundError When Importing Local Modules in Python

Learn how to resolve the `ModuleNotFoundError` when trying to import local modules in your Python projects without modifying the system path.
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This video is based on the question https://stackoverflow.com/q/75986062/ asked by the user 'david backx' ( https://stackoverflow.com/u/17596179/ ) and on the answer https://stackoverflow.com/a/75986105/ provided by the user 'Branch' ( https://stackoverflow.com/u/20273729/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Fix ModuleNotFoundError When Importing Local Modules in Python

Are you facing issues when trying to import local modules in your Python project? You’re not alone! This is a common problem that many developers encounter, especially those working with structured projects. In this guide, we will explore the problem of being unable to import local modules and provide a straightforward solution.

The Problem: Importing Local Modules

When you attempt to import local modules and receive an error like:

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

it's frustrating, especially when you believe you’ve set everything up correctly. Let’s look at the directory structure you might be dealing with:

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

In your main.py, you are likely trying to execute the following import statement:

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

However, if you find that this leads to a ModuleNotFoundError, there’s a very specific fix that you need to implement.

The Solution: Add an __init__.py File

To successfully import local modules within your directory structure, Python requires that you signal to it that a directory contains a package. This is achieved by including a special file called __init__.py. Here’s how you can address the problem:

Step 1: Create the __init__.py File

Navigate to your jobs folder.

Create an empty file named __init__.py. This file can be completely empty; its mere presence is what counts.

Your updated directory should look like this:

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

Step 2: Test Your Imports Again

Once you have added the __init__.py file to the jobs directory, try to rerun your main.py file. The import statements should now work correctly without throwing a ModuleNotFoundError.

The import should work seamlessly as follows:

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

Key Takeaways

Presence of __init__.py: Without the __init__.py file, Python treats the directory as a regular folder, not a package.

Simpler Imports: After creating this file, you will no longer need to modify the system path with sys.path.append(), which is often not a best practice for maintainable code.

Conclusion

By understanding the importance of the __init__.py file, you can effectively manage your Python module imports. This small adjustment will streamline your developing experience and resolve the common confusion that arises with local module imports. Don’t hesitate to revisit your project structure, and ensure packages are properly defined.

Happy coding! Let us know if you have any questions or run into issues.