标签:多次 翻转 return 出现 strip char col 一个 lower
1.python字符串相关操作
s1 = " hello " s2 = " world! " #去除字符串左右两边的空格 s1 = s1.strip() s2 = s2.strip() #拼接字符串 s = s1+s2 #查找字符或子串 s_index = s.index(‘hello‘) #字符串大小写转换 s3 = "ABC" s4 = "abc" s3_lower = s3.lower() s4_upper = s4.upper() #翻转字符串 s_reverse = s[::-1] #查找字符串 s_find = s.find("hello") #分割字符串 s5 = "a,b,c,d,e" s5_split = s5.split(",")
import re from collections import Counter #获取字符串中出现最多次数的字符 def count_char(str): str = str.lower() res = re.findall("[a-z]",str) count = Counter(res) return [k for k,v in count.items() if v==max(list(count.values()))]
2.正则表达式(网上很多教程,关键还是理解每一个代表什么意思,还要多写,其实没什么大不了,这里就不写了)就只写写python中是怎么用的
标签:多次 翻转 return 出现 strip char col 一个 lower
原文地址:https://www.cnblogs.com/xiximayou/p/11829706.html