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Showing content from https://realpython.com/courses/python-keyerror/discussion/ below:

What a Python KeyError Usually Means (Video) – Real Python

Python’s KeyError exception is a common exception encountered by beginners. Knowing why a KeyError can be raised and some solutions to prevent it from stopping your program are essential steps to improving as a Python programmer.

By the end of this course, you’ll know:

• What a Python KeyError usually means
• Where else you might see a KeyError in the standard library
• How to handle a KeyError when you see it
• When to raise a Python KeyError in your code

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