要求如下
1.返回一个字符串中出现次数第二多的单词
2.字符串中可能有英文单词、标点、空格
3.字符串中的英文字符全部是小写
import re
from collections import Counter
def second_count_word(s):
lt1 = re.findall('[a-z]+', s)
print(lt1)
lt = Counter(lt1)
lt2 = sorted(lt.items(), key=lambda x: x[1], reverse=True)
return lt2[1][0]
a = ' godl is a,good man! good2 godl godl good1, good, '
print(second_count_word(a))