Usage of the Set module in Python

Today there is a simple small need: to find the number of each element in the list, there are several ways to implement it, here I say a set to achieve.

#!/usr/bin/env PYTHONFA = [1,2,3,4,5,3,2,1,1,1,1,1,1,3,3,3,3,3]FB = set (FA) for I in Fb:print i,fa.count (i)

A list is defined first, then the list is assigned to the FB after using set initialization, in the For loop FP, the value of the FP is in the list, and after the values in the list are obtained, the Count function is used to calculate the number of each value.

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This article comes from "My future is not a dream." "Blog, be sure to keep this provenance http://song49.blog.51cto.com/4480450/1543498

Usage of the Set module in Python