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> 原文:[https://www . geeksforgeeks . org/使用 python 字典计算列表中的频率/](https://www.geeksforgeeks.org/counting-the-frequencies-in-a-list-using ...
> 原文:[https://www . geesforgeks . org/python-计数-字典中的项目数-值-即列表/](https://www.geeksforgeeks.org/python-count-number-of-items-in-a ...
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