'type' object does not support item assignment

This error message typically occurs when trying to assign a value to an item of an object that is not mutable. In other words, the object does not allow its items to be changed.

For example, if we have a string:

s = "hello"

And we try to change the first character:

s[0] = "j"

We will get the error message "'str' object does not support item assignment", because strings are immutable in Python and we cannot change their characters.

Similarly, if we have a tuple:

t = (1, 2, 3)

And we try to change the second element:

t[1] = 4

We will get the error message "'tuple' object does not support item assignment", because tuples are also immutable in Python.

To avoid this error, we need to use mutable objects such as lists, dictionaries or sets, which allow their items to be changed.