Tuples in Python

• Tuples are very much like lists but the difference is that tuples cannot be changed.
• Tuples are denoted by: () whereas lists are denoted by: []
• To access element in tuple we make use of square brackets. E.g. tup[0]
• Tuples have similar functions as list as they are:
  • cmp(tup1, tup2)
  • len(tup)
  • max(tup)
  • min(tup)
  • tuple(sequence)
• Let’s see tuples in action:

>>> tup = ()    >>> tup = ("xyz", "xyz")    >>> tup    ('xyz', 'xyz')    >>> tup = (    ... ("one", "one"),    ... ("two", "two"),      ... )    >>> tup      (('one', 'one'), ('two', 'two'))    >>> tup[0]    ('one', 'one')    >>> tup[0][0]    'one'    >>> tup += ("three", 4)    >>> tup    (('one', 'one'), ('two', 'two'), 'three', 4)    >>> tup += (("three", 4),)    >>> tup    (('one', 'one'), ('two', 'two'), 'three', 4, ('three', 4))    >>> # this is like a list within a list    ...    >>> some_list = []    >>> abc = ["one", "one"]    >>> some_list.append(abc)    >>> some_list    [['one', 'one']]    >>> # So tuples are used in a way like dictionary are but based on positions    ...