Solving the ModuleNotFoundError When Importing Multiple Modules in Python

Learn how to resolve the `ModuleNotFoundError` when importing multiple modules from different directories in Python, with a focus on effective project structure and import statements.
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Understanding the ModuleNotFoundError in Python

If you're working on a Python project with multiple modules located in different folders, you might encounter a frustrating error: ModuleNotFoundError. This happens when the Python interpreter can't find a module you've tried to import. In this guide, we'll explore a specific scenario that one student faced while trying to import two modules from different folders — and how to effectively resolve the issue.

The Problem

Let's take a look at the project structure this student was working with:

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The Root Cause

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Solutions to the Problem

To resolve this ModuleNotFoundError, you have a couple of effective options.

Solution 1: Modify the Import Statement

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To:

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This tells Python exactly where to look for config_reader, ensuring it can successfully find the module.

Solution 2: Move the Module

Which Solution Should You Choose?

Modify the Import Statement: This method is generally recommended as it keeps your project structure clean and organized. It also avoids potential module conflicts in the future.

Move the Module: This approach could be suitable for simple projects or if you're quickly prototyping programs. However, it may lead to a messy structure as your project grows.

Conclusion

In summary, Python's ModuleNotFoundError can be a roadblock, especially when dealing with multiple imports from different directories. By understanding the import mechanism and adjusting your import statements accordingly, you can resolve these issues efficiently.

Don't hesitate to revisit the import paths in your projects, as maintaining a clear project structure is vital for sustainable coding practices. Happy coding!