python 3.3 引入了string.casefold方法,其效果和string.lower非常类似,都可以把字符串变成小写,那么它们之间有什么区别?他们各自的应用场景? 对Unicode 的时候用casefold string.casefold官方说明: Casefolding is similar to lowercasing but more aggressive because it is intended to remove all case distinctions in ...
string.lower() lower() Parameters() lower()method doesn't take any parameters. lower() Return value lower()method returns the lowercase string from the given string. It converts all uppercase characters to lowercase. If no uppercase characters exist, it returns the original string. Example 1...
str.upper() 函数用于将字符串转换为大写形式。它接受一个字符串作为参数，并返回一个新的字符串，其中所有字符都被转换为大写。以下是一个示例：python复制代码string = "Hello, world!" uppercase = string.upper()print(uppercase) # 输出：HELLO, WORLD!str.lower() 函数 str.lower() 函数用于将字符串...
1. len(): 返回字符串的长度。string = "Hello, World!"length = len(string)print(length) # 输出 13 2. upper(): 将字符串中的所有字符转换为大写。uppercase_string = string.upper()print(uppercase_string) # 输出 "HELLO, WORLD!"3. lower(): 将字符串中的所有字符转换为小写。lowercase_strin...
11) string.uppercase A string containing all the characters that are considered uppercase letters. On most systems this is the string 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'. Do not change its definition — the effect on the routines lower() and swapcase() is undefined. The specific value is locale-depe...
string.upper(),string.lower()和string.title()方法是Python中的内置方法,用于将字符串格式化为特殊格式,例如大写,小写或小写。 1) string.upper() 1)string.upper() Method returns uppercase string (where all characters of the string are in uppercase). ...
A string containing all the characters that are considered uppercase letters. On most systems this is the string 'ABCDEFGHIJKLMNOPQRSTUVWX YZ'. Do not change its definition — the effect on the routines lower() and swapcase() is undefined. The specific value is locale-dependent, and will be ...
python 3.3 引入了string.casefold 方法,其效果和 string.lower 非常类似,都可以把字符串变成小写,那么它们之间有什么区别?什么时候该用string.casefold而非string.lower?? In [5]: name = 'Xu Zhoufeng' In [6]: name.casefold() Out[6]: 'xu zhoufeng' In [7]: cname = 'Yu Dongfeng' In [8]: cn...
string str 字符串 define 定义 delete del 删除 rencent 最近的(时间方面) last 最后的 call 调用 tools 工具 professional 专业的 Development 开发 developer 开发者 community 社区 setup 安装 guide 想到 installation 安装 recommend 建议 application 应用 ...
string.ascii_letters:所有字母(大小写) string.lowercase:所有小写字母 string.printable:可打印字符的字符串 string.punctuation:所有标点 string.uppercase:所有大写字母 >>> import string >>> string.digits '0123456789' >>> string.letters 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' ...