一,摘自官方API https://docs.python.org/3/library/stdtypes.html#methods str.startswith(prefix[,start[,end]]) ReturnTrueif string starts with theprefix, otherwise returnFalse.prefixcan also be a tupleof prefixes to look for. With optionalstart, test string beginning at that position. With opt...
string.startswith(value, start, end) Parameter Values ParameterDescription valueRequired. The value to check if the string starts with. This value parameter can also be a tuple, then the method returns true if the string starts with any of the tuple values. ...
The syntax ofstartswith()is: str.startswith(prefix[, start[, end]]) startswith() Parameters startswith()method takes a maximum of three parameters: prefix- String ortupleof strings to be checked start(optional) - Beginning position whereprefixis to be checked within the string. end(optional...
The Python startswith() method returns True if the string starts with the specified value, otherwise False. If we will not specify the starting position of the substring, then by default, it will check at index 0
str.startswith(prefix[,start[,end]]) prefix(mandatory) –Stringortupleof strings to be checked. start(optional) – Beginning position whereprefixis to be checked within the string. If not specified, the method searches from the beginning of the string. ...
string="Hello, World!"is_startswith_hello=string.startswith("Hello")print(is_startswith_hello)# 输出:True 1. 2. 3. 在上面的代码中,我们使用startswith方法判断字符串是否以"Hello"开头,结果为True。 使用正则表达式选取开始部分 如果我们需要更复杂的字符串匹配操作,可以使用正则表达式来选取字符串的开始...
Return a copy of the string with only its first character capitalized. For 8-bit strings, this method is locale-dependent. str.center(width[, fillchar]) Return centered in a string of length width. Padding is done using the specified fillchar (default is a space). ...
Python中的字符串类型还提供了startswith()和endswith()方法,用于判断一个字符串是否以某个子字符串开头或结尾。 下面是一个示例代码: text="Hello, World!"start_string="Hello"end_string="World"iftext.startswith(start_string):print("以",start_string,"开头")iftext.endswith(end_string):print("以"...
MethodDescription capitalize() Converts the first character to upper case casefold() Converts string into lower case center() Returns a centered string count() Returns the number of times a specified value occurs in a string encode() Returns an encoded version of the string endswith() Returns...
Return a copy of the string with only its first character capitalized. For 8-bit strings, this method is locale-dependent. str.center(width[, fillchar]) Return centered in a string of length width. Padding is done using the specified fillchar (default is a space). ...