时间：2021-05-09 07:47:07 | 栏目：Python代码 | 点击：次
三种方法：
①直接使用dict
②使用defaultdict
③使用Counter
ps:`int()`函数默认返回0
①dict
text = "I'm a hand some boy!"
frequency = {}
for word in text.split():
if word not in frequency:
frequency[word] = 1
else:
frequency[word] += 1
②defaultdict
import collections frequency = collections.defaultdict(int) text = "I'm a hand some boy!" for word in text.split(): frequency[word] += 1
③Counter
import collections text = "I'm a hand some boy!" frequency = collections.Counter(text.split())
总结