5.If sub-string not find in the string then it returns -1Example:# Python program to explain find() method sstr = 'Welcome to STechies: Smart Techies' # Returns first occurrence of Substring sub = sstr.find('STechies') print ("Stechies is at :", sub ) # find() method is case...
import re string = 'bobby hadz bobbyhadz.com' indexes = [ match.start() for match in re.finditer(r'bob', string) ] print(indexes) # 👉️ [0, 11] Alternatively, you can use a for loop. # Find all indexes of a substring in a String using a for loop This is a four-step...
find 函数在不同的编程语言和库中可能有不同的实现方式和参数。然而,在许多情况下(尤其是在字符串处理中),find 函数的三个常见参数通常用于指定要搜索的字符串、目标子串以及可选的起始位置。以下是一个通用的描述,以 Python 中的 str.find() 方法为例:Python...
find() Return Value Thefind()method returns an integer value: If the substring exists inside the string, it returns the index of the first occurence of the substring. If a substring doesn't exist inside the string, it returns-1. Working of find() method Working of Python string's find()...
• If the string contains a substring, this function returns the index for the first string occurrence; if the substring does not exist in a string, the function returns -1. • String find() function helps to find the substring index within a string. ...
In this article, we will learn about different methods to find substring within a string in JavaScript, including Regular expressions and built-in JavaScript methods.
This is a modal window. No compatible source was found for this media. The index where the substring is found: 15 The index where the substring is found: 20 Example If the substring is not found in the given range, then '-1' is printed as output. Following is an example for this. ...
string的方法find 官方解释:find(sub[, start[, end]]) Return the lowest index in the string where substring sub is found within the slice s[start:end]. Optional arguments start and end are interpreted as in slice notation. Return -1 if sub is not found.(返回在切片s [start:end]中找到...
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python script.py somefile.in somefile.out To replace thefirstoccurrence of a pattern with a given string, use${parameter/pattern/string}: #!/bin/bash firstString="I love Suzi and Marry" secondString="Sara" echo "${firstString/Suzi/$secondString}" ...