#字符串的索引与切片'''s = 'ABCDLSESRF'#索引# s1 = s[0]# print(s1)# s2 = s[2]# print(s2)# s3 = s[-1]# print(s3)# s4 = s[-2]# print(s4)# #ABCD   切片 ：顾头不顾尾# s5 = s[0:4]# print(s5)# s6 = s[0:-1]# print(s6)# s7 = s[:]# s8 = s[0:]# print(s7,s8)# s9 = s[0:0]s = 'ABCDLSESRF'  # s[首:尾:步长]# s10 = s[0:5:2]# print(s10)s11 = s[4:0:-1]print(s11)s12 = s[3::-1]print(s12)s13 = s[3::-2]print(s13)s = 'ABCDLSESRF's14 = s[-1::-1]print(s14)s15 = s[::-1]print(s15)'''#字符串的操作s = 'alexWUsir's1 = s.capitalize()  # 首字母大写# print(s1)# 全大写，全小写s2 = s.upper()s21 = s.lower()# print(s2,s21)'''s_str= 'acEQ1'you_input =input('请输入验证码，不区分大小写')if s_str.upper() == you_input.upper():    print('输入成功')else:    print('请重新输入')'''#大小写翻转# s3 = s.swapcase()# print(s3)# 每个隔开(特殊字符或者数字)的单词首字母大写# s = 'alex*egon-wusir'# s4 = s.title()# print(s4)# s = 'fade,crazy*w4rri0r_songsong node_3'# s4 = s.title()# print(s4)#居中，空白填充# s = 'alexWUsir'# s5 = s.center(20,'~')# print(s5)# s = 'alex\tsir'# s6 = s.expandtabs()# print(s6)# s = 'alex二哥'# #公共方法# l = len(s)# print(l)#以什么开头结尾 endswith# s = 'alexWUsir'# s7 =s.startswith('alex')# s71 = s.startswith('e',2,5)# print(s71)'''if s7:    passelif s.startswith('bl'):    passprint(s7)'''# find 通过元素找索引，找不到返回-1## index通过元素找索引，找不到报错# s = 'alexWUsir'# s8 = s.find('A')# s81 = s.index('A')# print(s81,type(s8))#strip rstrip lstrip# s = 'alexWUsir%'# s9 = s.strip('%')# print(s9)# s = ' *a%lexWUsi* r%'# s91 = s.strip(' %*')# print(s91)# strip 默认删除前后空格# username = input('请输入名字：').strip()# if username =='春哥':#     print('恭喜春哥发财')# s = 'alexaa wusirl'# s10 = s.count('al')# print(s10)# split   str ---->list# s = ';alex;wusir;taibai'# l = s.split('a')# print(l)#format的三种玩法 格式化输出# s = '我叫{}，今年{}，爱好{}，再说一下我叫{}'.format('太白',36,'girl','太白')# print(s)# name = input('请输入名字：')# s = '我叫{0}，今年{1}，爱好{2}，再说一下我叫{0}'.format(name,36,'girl')# print(s)# name = input('请输入名字：')# s = '我叫{name}，今年{age}，爱好{hobby}，再说一下我叫{name}'.format(age=18,name=name,hobby='girl')# print(s)# s = '来看待街坊邻居复合大师街坊法好的撒见客户'# s11 = s.replace('街坊','老王',1)# print(s11)# s = 'fhdsklfds'# for i in s:#     print(i)s = 'fdsa苍井空fdsalk'if '苍井空' in s:    print('您的评论有敏感词...')