##将首字母改成大写
# name = ‘alex‘
# v = name.capitalize()
# print(v)

##将首字母改成小写
# name = ‘Alex‘
# v = name.casefold()
# print(v)

###传一个值，两边补的是添加的字符
# name = ‘Alex‘
# v = name.center(20,‘*‘)
# print(v)

##统计字符串出现的次数
# name = ‘Alex‘
# v = name.count(‘A‘)
# print(v)


##判断字符的结尾是否以某个字符串结尾的
# name = ‘Alex‘
# v = name.endswith(‘ex‘)
# print(v)


##制表符（包含前边的值，整体占8个）
# name = ‘Alex\tegon\twupeiqi‘
# v = name.expandtabs(8)
# print(v)

##索引
# name = ‘Alex‘
# v = name.find(‘A‘)
# print(v)

##字符串格式化
# tpl = ‘我是:{0};年龄:{1};性别:{2}‘
# v = tpl.format(‘李杰‘,‘12‘,‘女‘)
# print(v)

# tpl = ‘我是:{name};年龄:{age};性别:{sex}‘
# v = tpl.format(name = ‘李杰‘,age = 12,sex = ‘女‘)
# print(v)


##根据键找到对应位置的值
# tpl = ‘我是:{name};年龄:{age};性别:{sex}‘
# v = tpl.format_map({‘name‘:‘李杰‘,‘age‘:‘12‘,‘sex‘:‘女‘})
# print(v)


##找到对应字符串的索引
# name = ‘Alex‘
# v = name.index(‘A‘)
# print(v)

#判断
# name = ‘Alex‘
# v = name.isalnum()#只能包含字母、数字、汉字
# print(v)

##判断是否全部为字母
# name = ‘Alex‘
# v = name.isalpha()
# print(v)

##判断是否全部为阿拉伯数字
# my_num = ‘123‘
# v = my_num.isdecimal()
# print(v)

##能识别阿拉伯数字②
# my_num = ‘123②‘
# v = my_num.isdigit()
# print(v)

##能识别多种字符
# my_num = ‘123②二‘
# v = my_num.isnumeric()
# print(v)


##判断是否为关键字
# my_num = ‘num‘
# v = my_num.isidentifier()
# print(v)

##判断是否都为小写
# name = ‘alex‘
# v = name.islower()
# print(v)

##在字符串中出现的打印不出来的为False
# name = ‘al\nex‘
# v = name.isprintable()
# print(v)

##判断是否全部为空格
# name = ‘al ex‘
# v = name .isspace()
# print(v)

##判断是否全部为大写
# name = ‘alex‘
# v = name.isupper()
# print(v)

#内部循环每一个元素
# name = ‘alex‘
# v = ‘*‘.join(name)
# print(v)


##把值放到左边，右边填充相应剩下长度的字符
# name = ‘alex‘
# v = name.ljust(20,‘*‘)
# print(v)


##不仅可以移除空白，也可以移除换行符，制表符也可以自定义
# name = ‘alex‘
# v = name.strip(‘x‘)
# print(v)


##将字符串的大小写互换
# name = ‘Alex‘
# v = name.swapcase()
# print(v)

##替换字符串
# name = ‘你love他‘
# v = name.replace(‘love‘,‘爱‘)
# print(v)

##分割，将分割后的元素剔除
# name = ‘你love他‘
# v = name.split(‘love‘)
# print(v)

Python自动化之列表