Fixing the NameError: name 'upper' is not defined in Python Unit Testing

Encountering a `NameError` while running Python unit tests? Learn how to solve the `NameError: name 'upper' is not defined` error effectively with clear code examples.
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Understanding the NameError: name 'upper' is not defined

As you delve into the world of Python unit testing, encountering errors is part of the learning process. One error that has caused confusion for many is the NameError: name 'upper' is not defined. If you're seeing this message pop up while running your test cases, don't worry! You've come to the right place for a solution.

The Problem: NameError Explained

When you run your unit tests in Python and encounter an error message like:

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

This indicates that Python can't find a reference to the name you've used—upper in this case. It suggests that there might have been an oversight in how you imported or referenced your functions from other files.

The Code Leading to the Error

Consider the following files you are working with:

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

The Solution: Fixing the Import

To resolve the NameError, adjustments in the import statement and how the function is called in your test case are necessary:

Step 1: Change the Import Statement

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to:

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Step 2: Update Function Call

Now, change how you are calling the function within your test case. Modify the line:

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to:

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

The Corrected Code

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Conclusion

Fixing the NameError: name 'upper' is not defined only requires minor adjustments in your import statements and function calls. By ensuring that your imports are correct and using the function's name directly, you can run your tests successfully without encountering this error again.

Now, you're all set to test your functions without any hiccups! If you have any further questions or run into more issues, don't hesitate to reach out. Happy coding!