At first glance, they look exactly the same, just with different brackets.
Lists use square brackets: my_list = [1, 2, 3]
Tuples use parentheses: my_tuple = (1, 2, 3)
The massive difference comes down to a concept called mutability (whether the data can be changed after it is created).
The Core Difference
Lists are mutable: You can add, remove, or alter items after creating the list. Think of them as a whiteboard where you can erase and rewrite things as your program runs.
Tuples are immutable: Once you create a tuple, it is locked. You cannot change, append, or remove elements. Think of a tuple like a printed book once it is published, the text is set permanently.
|
Feature |
List |
Tuple |
|---|---|---|
|
Syntax |
[1, 2, 3] |
(1, 2, 3) |
|
Mutable? |
Yes |
No |
|
Size in Memory |
Larger |
Smaller |
|
Best Used For |
Data that will change (e.g., active user sessions) |
Fixed data (e.g., days of the week, GPS coordinates) |

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