python compare lists and only keep the ones that are in all lists code example
Example 1: how to compare two lists element by element in python and return matched element
>>> [i for i, j in zip(a, b) if i == j]
[5]
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'])**