Exercise: Swap Two Variables

1. Write a program swap.py that exchanges (swaps) two variables var1 and var2, both str type.

   To output the values before and after the swap operation, use the print() function.

   var1 = 1
   var2 = 2
   
   print('Before:', var1, var2)
   # let the miracle happen: exchange the two variables!
   print('After:', var1, var2)
   

   Once the miracle took place, the output of the program should look like follows:

   $ python swap.py
   Before: 1 2
   After: 2 1
   

Dependencies