# -*- coding: utf-8 -*- # 要统计的词 words = ["腾讯", "百度", "阿里巴巴", "百度", "阿里巴巴"] # 方式一：使用dict方式 counter1 = {} for word in words: counter1[word] = counter1.get(word, 0) + 1 print(counter1) # {'腾讯': 1, '百度': 2, '阿里巴巴': 2} # 方式二：使用defaultdict from collections import defaultdict counter2 = defaultdict(lambda: 0) for word in words: counter2[word] += 1 print(counter2) # defaultdict(<function <lambda> at 0x102261e18>, # {'腾讯': 1, '百度': 2, '阿里巴巴': 2})
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