Collections Library in Python

#!/usr/bin/env python

# coding: utf-8

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import collections

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counter=collections.Counter([1,1,2,2,3,3,3,3,4,5,6,7])

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counter

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counter.most_common(1)

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counter.most_common(2)

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counter.most_common(3)

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counter=collections.Counter("clcoding")

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counter

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counter["c"]

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counter.most_common(1)

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counter.most_common(2)

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counter=collections.Counter("ntirawen")

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counter

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counter2=collections.Counter("ntirawen")

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counter2

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counter3=collections.Counter("irawen")

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counter3

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counter2.subtract(counter3)

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counter2

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