6 运行结果：hello5hello worldhello world 12 7 string拥有这许多有用的方法。如下：s = "hello"print(s.capitalize()) # Capitalize a string; prints "Hello"print(s.upper()) # Convert a string to uppercase; prints "HELLO"print(s.rjust(7)) # Right-justify a string, padding with sp...
Python f-stringisthe newest Python syntax to do string formatting. Itisavailable since Python 3.6. Python f-strings provide a faster, more readable, more concise,andless error prone way of formatting stringsinPython. The f-strings have the f prefixanduse {} brackets to evaluate values. Format...
The f-strings have thefprefix and use{}brackets to evaluate values. Format specifiers for types, padding, or aligning are specified after the colon character; for instance:f'{price:.3}', wherepriceis a variable name. Python string formatting The following example summarizes string formatting opt...
def capitalize(self): """ 首字母变大写 """ """ S.capitalize() -> string Return a copy of the string S with only its first character capitalized. """ return "" def center(self, width, fillchar=None): """ 内容居中,width:总长度;fillchar:空白处填充内容,默认无 """ """ S.center...
另外String对象还有很多有用的方法 s ="hello"print(s.capitalize())#Capitalize a string; prints "Hello"print(s.upper())#Convert a string to uppercase; prints "HELLO"print(s.rjust(7))#Right-justify a string, padding with spaces; prints " hello"print(s.center(7))#Center a string, paddin...
[, fillchar]) -> string 22 23 Return S centered in a string of length width. Padding is 24 done using the specified fill character (default is a space) 25 """ 26 return "" 27 28 def count(self, sub, start=None, end=None): 29 """ 子序列个数 """ 30 """ 31 S.count(sub...
The>Nformat specifier (whereNis a whole number) right-aligns a string toNcharacters. Specifically, this formats the resulting substring to beNcharacters long with spaces padding the left-hand side of the string. Here the second replacement field is formatted to 25 characters long and right-aligned...
Return a left-justified string of length width. Padding is done using the specified fill character (default is a space). 返回长度为width的左对齐字符串。 使用指定的填充字符(默认为空格)填充。 """ pass def lower(self, *args, **kwargs): # real signature unknown ...
Padding is done using the specified fill character (default is a space). 返回长度为width的左对齐字符串。 使用指定的填充字符(默认为空格)填充。 """ pass def lower(self, *args, **kwargs): # real signature unknown """ Return a copy of the string converted to lowercase. 返回转换为小写的...
Return S centered in a string of length width. Padding is done using the specified fill character (default is a space) 示例: >>> s = 'hello world' >>> s.center(30,'*') '***hello world***' ljust 返回长度为 width 的字符串,原字符串左对齐,后面填充fillchar 返回一个原字符串左对齐...