python tuple[0] not working code example

Example 1: tuples

#!/usr/bin/python

tup1 = (12, 34.56);
tup2 = ('abc', 'xyz');

# Following action is not valid for tuples
# tup1[0] = 100;

# So let's create a new tuple as follows
tup3 = tup1 + tup2;
print tup3;

Example 2: what are tuples in python

#A tuple is essentailly a list with limited uses. They are popular when making variables 
#or containers that you don't want changed, or when making temporary variables.
#A tuple is defined with parentheses.