字符串操作

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)

# 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'

 

#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...')

 

# #公共方法 l = len(s) print(l)

#以什么开头结尾 endswith
s = 'alexWUsir'
s7 =s.startswith('alex')

#可设置范围
s71 = s.startswith('e',2,5)
print(s71)
'''
if s7:
    pass
elif s.startswith('bl'):
    pass
print(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))

# 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,t#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)