Variable Scope in Python (Local vs Global Variables)
Frustrated by UnboundLocalError or mysterious Python bugs? It’s time to master variable scope. In this video, we break down local, global, and enclosed scopes, explain shadowing, and introduce the LEGB rule — Python’s step-by-step guide for resolving variable names. By the end, you’ll know exactly where your variables live, how to safely modify them, and how to write cleaner, more robust Python code.
Perfect for beginners and anyone looking to write professional Python scripts without unexpected errors.
Time Stamps
0:00 Introduction – Why scope matters
0:18 The problem – UnboundLocalError explained
0:51 Scope definition – Local vs Global
1:27 Local scope example – Variables inside functions
2:10 Global scope example – Accessible everywhere
2:47 Interacting local and global – The original error revisited
3:22 Fixing the error – Using the global keyword
3:59 Shadowing – Local and global variables with same name
5:00 LEGB rule – Local, Enclosed, Global, Built-in
5:36 Enclosed scope example – Nested functions
6:13 Why scope matters – Writing safer, more professional code
What You Will Learn
The difference between local, global, and enclosed scope
How to fix the UnboundLocalError
What shadowing is and why it can confuse your code
The LEGB rule for Python variable resolution
Writing self-contained, bug-resistant functions
How mastering scope improves code readability and debugging
Hashtags
#PythonScope
#PythonVariables
#LearnPython
#PythonForBeginners
#PythonProgramming
#PythonFundamentals
#DebugPython
#PythonTips
#CleanCodePython
#ProfessionalPython
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