Why do we need tuples in Python (or any immutable data type)?

Question

I\'ve read several python tutorials (Dive Into Python, for one), and the language reference on Python.org - I don\'t see why the language needs tuples.

Tuples have n

Answer 1

Sometimes we like to use objects as dictionary keys

For what it's worth, tuples recently (2.6+) grew index() and count() methods