Pythonは単語の出現をカウントします

# -*- coding:utf-8 -*- import io import re class Counter: def __init__(self, path): """ :param path: 文件路径 """ self.mapping = dict() with io.open(path, encoding="utf-8") as f: data = f.read() words = [s.lower() for s in re.findall("\w+", data)] for word in words: self.mapping[word] = self.mapping.get(word, 0) + 1 def most_common(self, n): assert n > 0, "n should be large than 0" return sorted(self.mapping.items(), key=lambda item: item[1], reverse=True)[:n] if __name__ == '__main__': most_common_5 = Counter("importthis.txt").most_common(5) for item in most_common_5: print(item)

('is', 10) ('better', 8) ('than', 8) ('the', 6) ('to', 5)