In Python, tuple object is an immutable collection of items, not necessarily of same type. Items are separated by comma and placed inside parentheses, although they are optional.
>>> T1 = (1,'one',3.45,[1,2,3]) >>> T2 = 1,2,3,4
Empty tuple object is created with nothing inside parentheses
>>> T3 = () >>> T3 ()
If only one item is to be included in a tuple, an additional comma is placed after it.
>>> T4 = 10, >>> T4 = (5,)