csguy11 csguy11 - 1 year ago 73
Python Question

How to find list intersection?

a = [1,2,3,4,5]
b = [1,3,5,6]
c = a and b
print c


actual output:
[1,3,5,6]

expected output:
[1,3,5]


How can we achieve a boolean AND operation (list intersection) on two lists?

Answer Source

If order is not important and you don't need to worry about duplicates then you can use set intersection:

>>> a = [1,2,3,4,5]
>>> b = [1,3,5,6]
>>> list(set(a) & set(b))
[1, 3, 5]