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31 lines
711 B
31 lines
711 B
from cppy.cp_util import *
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from collections import Counter
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# 定义一个带计数器的元类
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class CounterMetaclass(type):
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def __new__(mcs, name, bases, attrs):
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attrs['_counter'] = Counter()
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return super().__new__(mcs, name, bases, attrs)
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# 基于元类创建类
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class Word(metaclass=CounterMetaclass):
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def __init__(self, word):
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self.word = word
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self._counter[self.word] += 1
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@classmethod
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def get_word_freqs(cls, n) -> Counter:
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return cls._counter.most_common(n)
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for word in extract_file_words(testfilepath):
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Word(word)
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print_word_freqs(Word.get_word_freqs(10))
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'''
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常用于将依赖项（如服务或配置）自动注入到类中。
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'''
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