How to Fix UnboundLocalError in Python?
Getting the weird "UnboundLocalError: local variable referenced before assignment" and scratching your head? You are not alone! This is one of the trickiest scope bugs in Python.
It happens when Python notices you are assigning a value to a variable inside a function, but you tried to read or use that same variable before that assignment line. In this video, Alex breaks down Python's scoping rules and shows you exactly how to fix it using the global or nonlocal keywords.
What You’ll Learn:
What an UnboundLocalError actually means and why it's different from a regular NameError.
How Python handles variable lookup inside functions (LEGB Rule).
When and how to safely use the global keyword.
Proper ways to update a variable inside a function without crashing your script.
Don't let variable scopes trip up your logic! Watch the full video to write bulletproof Python functions with Alex.
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