'tuple' and 'Add' code example
Example 1: tuple add
a = (1, 2, 3)
b = a + (4, 5, 6) # (1, 2, 3, 4, 5, 6)
c = b[1:] # (2, 3, 4, 5, 6)
Example 2: tuple push
a = ('Product', '500.00', '1200.00')
a = list(a)
a.insert(3, 'foobar')
a = tuple(a)
print a
>> ('Product', '500.00', '1200.00', 'foobar')