TypeError: 'tuple' object does not support item assignment when swapping values

Question

I am writing a simple sort program in python and encounter this error. I want to swap list elements but it returns an error. I am attaching the error and program in question

Answer 1

Evaluating "1,2,3" results in (1, 2, 3), a tuple. As you've discovered, tuples are immutable. Convert to a list before processing.