how to compare 2 list with same value in python code example

Example 1: python same values in two lists

a = {1, 2, 3, 4}
b = {3, 4, 5, 6}

a.intersection(b)

Example 2: compare two list in python

>>> s = ['a','b','c']   
>>> f = ['a','b','d','c']  
>>> ss= set(s)  
>>> fs =set(f)  
>>> print ss.intersection(fs)   
   **set(['a', 'c', 'b'])**  
>>> print ss.union(fs)        
   **set(['a', 'c', 'b', 'd'])**  
>>> print ss.union(fs)  - ss.intersection(fs)   
   **set(['d'])**