Python gets a method of two array intersection, set, and difference _python

Source: Internet
Author: User
Tags python list

The example in this article describes Python's two-array intersection, the set, and the difference set's room portion. Share to everyone for your reference. Specifically as follows:

1. Get the intersection of two list

#方法一:
a=[2,3,4,5]
b=[2,5,8]
tmp = [val for Val in ' A if Val in b]
print tmp
#[2, 5]
 
#方法二
Print List (set (a). Intersection (set (b))

2. Get the collection of two list

Print List (set (a). Union (set (b))

3. Get the difference set of two list

Print List (set (b). Difference (set (a))) # B and there's nothing in a

By using the above method, we can deal with the intersection of the Python list, and set the difference set.

I hope this article will help you with your Python programming.

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