done using the specified fill character (default is a space)."""return""#内容右对齐,右边用fillchar填充defrjust(self, width, fillchar=None):#real signature unknown; restored from __doc__"""S.rjust(width[, fillchar]) -> str Return S right-justified in a string of length width. Paddin...
Split the string at the first occurrence of sep, and return a 3-tuple containing the part before the separator, the separator itself, and the part after the separator. If the separator is not found, return a 3-tuple containing the string itself, followed by two empty strings. >>>a ='a...
More specifically, make the first character have upper case and the rest lower case. """ pass def casefold(self, *args, **kwargs): # real signature unknown """ Return a version of the string suitable for caseless comparisons. """ pass def center(self, *args, **kwargs): # real si...
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). Changed in version 2.4...
string="Hello, World!"char="o"index=string.index(char)print(f"The first occurrence of '{char}' is at index{index}") 1. 2. 3. 4. 输出: The first occurrence of 'o' is at index 4 1. 如果字符不存在于字符串中,index()方法将引发ValueError异常。为了避免异常的发生,可以使用in关键字进行...
char a[101]="Hello,World"; reverse(a,a+strlen(a)); 1. 2. 2.substr() 头文件#include<string> (1)字符串截取函数,从下表i开始,截取到长度为n的字符串。形式 s.substr(i,n); 1. (2) string sub1=s.substr(5); 1. 表示从下标5开始一直到字符串结束 ...
make the first character have upper case and the rest lower case. """ return "" def casefold(self): # real signature unknown; restored from __doc__ """ S.casefold() -> str Return a version of S suitable for caseless comparisons. """ return "" def center(self, width, fillchar=...
defindex(self,value,start=None,stop=None):# real signature unknown;restored from __doc__"""T.index(value,[start,[stop]])->integer--returnfirst indexofvalue.Raises ValueErrorifthe value is not present."""return0 代码语言:javascript
S.center(width[,fillchar])->str ReturnScenteredinastringoflengthwidth.Paddingis doneusingthespecifiedfillcharacter(defaultisaspace)(返回年代集中在一个字符串的长度宽度。填充使用指定的填充字符(默认是一个空间)) """ return"" defcount(self,sub,start=None,end=None):#realsignatureunknown;restoredfrom__...
简介:本文包括python基本知识:简单数据结构,数据结构类型(可变:列表,字典,集合,不可变:数值类型,字符串,元组),分支循环和控制流程,类和函数,文件处理和异常等等。 Python基础知识点总结 一、开发环境搭建 二、基本语法元素 2.1 程序的格式框架 程序的格式框架,即段落格式,是Python语法的一部分,可以提高代码的...