Tuples are like lists, but immutable. Unlike a list though, you can't update values, add new values, or delete values in a tuple.
Tuples are all over the place in Python. For example, the built-in enumerate function accepts an iterable and returns a new iterable of two-item tuples.
The parentheses are optional; commas are what make a tuple in Python. It's not the parentheses but the commas that form a tuple.
Tuples are primarily used to distinguish list-like data from tuple-like data. List-like data tends to be of the same type with high quantity, while tuple-like data has different types and a fixed quantity.
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