1) string.upper() 1)string.upper() Method returns uppercase string (where all characters of the string are in uppercase). 方法返回大写字符串(其中字符串的所有字符均为大写)。 Example: "HELLO WORLD" 示例: “ HELLO WORLD” 2) string.lower() 2)string.lower() Method returns lowercase string ...
2 在Python项目中，新建并打开一个空白的python文件（比如：test.py）。3 在python文件编辑区中，输入：“import string”，导入 string 模块。4 输入：“x = string.ascii_lowercase”，点击Enter键。5 然后输入：“print(x)”，打印出 string.ascii_lowercase 属性。6 在编辑区域点击鼠标右键，在弹出菜单中选择...
那么这两个函数有什么区别呢? 首先想到的是,查看帮助,使用help方法: >>>help(str.lower) Help on method_descriptor: lower(...) S.lower()->str Return a copy of the string S converted to lowercase.>>>help(str.casefold) Help on method_descriptor: casefold(...) S.casefold()->str Return a...
Return the lowest index in the string where substring sub is found, such that sub is contained in the slice s[start:end]. Optional arguments start and end are interpreted as in slice notation. Return -1 if sub is not found.Note: The find() method should be used only if you need to ...
参考链接: Python中的string.octdigits common string oprations import string 1. string constants(常量) 1) string. ascii_letters The concatenation of the ascii_lowercase and ascii_uppercase constants described below. This value is not locale-dependent. ...
""" Return a copy of the string converted to lowercase. 返回转换为小写的字符串副本。""" pass def lstrip(self, *args, **kwargs): # real signature unknown """ Return a copy of the string with leading whitespace removed. If chars is given and not None, remove characters in chars instea...
八、string模块常用字符串常量 # 使用常量需要import >>> import string as str # 生成所有小写字母 >>> str.ascii_lowercase 'abcdefghijklmnopqrstuvwxyz' # 生成所有大写字母 >>> str.ascii_uppercase 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' # 小写字母和大写字母 >>> str.ascii_letters 'abcdefghijklmnopqrstuvwxyzABC...
In this unit, you use the most common string methods in Python to manipulate strings, from simple transformations to more advanced search-and-replace operations.
| Return True if the string is a valid Python identifier, False otherwise. | | Use keyword.iskeyword() to test for reserved identifiers such as “def” and |“class”. | | islower(self, /) | Return True if the string is a lowercase string, False otherwise. ...
string.ascii_letters 是上述ascii_lowercase和ascii_uppercase常量的拼接。 >>> string.ascii_letters 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' 1. 2. string.digits 返回所有的十进制数字。 >>> string.digits '0123456789' 1. 2. string.hexdigits ...