Python's Hidden Challenges: 7 Concepts You Need to Master

1. Mutable vs Immutable Objects

Confusion: Understanding which objects are mutable (e.g., lists, dictionaries) and which are immutable (e.g., strings, tuples) can be tricky.

Example:

a = [1, 2, 3]
b = a
b.append(4)
print(a)  

#source code --> clcoding.com

[1, 2, 3, 4]