自学python教程过程中的记录
name = "Wangdc"
user = "my name is {names}"
print(name.capitalize()) # 首字母大写
print(name.count("i")) # 统计出现的次数
print(name.center(50,"-")) # 共50字符,不够用-补全
print(name.endswith("x")) # 判断是否以x结尾
# print(name.expandtabs(tabsize=30))
print(name[name.find("wx"):])
print(user.format(names = 'Wangdc'))
print(user.format_map({'names' : 'Wangdcx'}))
print(name.isalnum()) # 是不是阿拉伯数字
print(name.isalpha())
print('A16'.isdecimal()) # 是不是十进制
print('A16'.isdigit())
print('A16'.isidentifier()) # 判断是否为一个合适的标识符变量名
print(name.islower()) # 是否为小写
print(name.isnumeric()) # 是否为数字(整数)
print(name.isspace()) # 是否为空格
print('My Name Is '.istitle()) # 是否首字母大写
print('My Name Is '.isprintable()) # tty文件,driver文件
print('My Name Is '.isupper()) # 是否都是大写
print(','.join(['1','2','3'])) # 将字符串加到列表值中间
print(name.ljust(50,'*'))
print(name.rjust(50,'*'))
print(name.lower()) # 转换为小写
print(name.upper()) # 转换为大写
print(name.lstrip()) # 从左边去除回车\n
print(name.rstrip())
print(name.strip()) # 去除所有空格和回车
p = str.maketrans("abcdefghi",'123456789') # 随机密码
print('Wangdc'.translate(p))
print('Wangdc'.replace('w','W')) # 大小写替换
print('Wangdc'.rfind('x')) # 从左往右面开始查找,查找最后一个匹配项
print('Wangdc name'.split('i')) # 默认空格,可指定分隔符
print('Wangdc\name'.splitlines()) # 按换行符分割
print('Wangdc name'.swapcase()) # 原来大写,输出小写
print('Wangdc name'.title())
print('Wangdc name'.zfill(50)) # 位数不够,用0填充