Counters are based on Python dictionaries, their keys are the elements, so the keys need to be hashable. They are basically like sets that allow redundant ... ... <看更多>

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What you want is collections.Counter , and the Counter.most_common method. A naive implementation could be: import collections lists ... ... <看更多>

How to count list element frequency in python. In simple terms, count() method counts how many times an element has occurred in a list and returns it. ... <看更多>