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() and rfind() methods Example 1: find() With No start and ...
#findreturns -1ifsubstring not found result = quote.find('small') print("Substring 'small ':", result) # How tousefind()if(quote.find('be,') != -1): print("Contains substring 'be,'")else: print("Doesn't contain substring") 输出 Substring 'let it': 11 Substring 'small ': -1...
Python 18. Sept. 2020·5 Min.Lesezeit If you are looking to find or replace items in a string, Python has several built-in methods that can help you search a target string for a specified substring. .find()Method Syntax string.find(substring,start,end) ...
百度试题 结果1 题目在Python中,如何判断一个字符串是否包含另一个子字符串? A. str.contains(substring) B. str.find(substring) C. str.search(substring) D. str.includes(substring) 相关知识点: 试题来源: 解析 B 反馈 收藏
# Substring is searched in 's for g' print(word.find('for ',4,11)) 输出: 10 -1 -1 6 注:本文由VeryToolz翻译自Python String find() method,非经特殊声明,文中代码和图片版权归原作者pawan_asipu所有,本译文的传播和使用请遵循“署名-相同方式共享 4.0 国际 (CC BY-SA 4.0)”协议。
Write a Python program to determine the index of a given string at which a certain substring starts. If the substring is not found in the given string return 'Not found'. Sample Solution: Python Code: # Function to find index of substring ...
finditer(r'bob', string))[1].start() # 👉️ 11 ) The new list contains the index of all occurrences of the substring in the string. main.py import re string = 'bobby hadz bobbyhadz.com' indexes = [ match.start() for match in re.finditer(r'bob', string) ] print(indexes)...
提取字符串substring() substring() 方法用于提取字符串中介于两个指定下标之间的字符. 语法: stringObject.substring(startPos,stopPos) 参数说明: 注意: 1. 返回的内容是从 start开始(包含start位置的字符)到 stop-1 处的所有字符,其长度为 stop 减start. 2. 如果参数 start 与 stop 相等,那么该方法返回的就...
The source string: Check if string contains the required word? The position of ‘contains’ word: 16 You should use thein operatorfor knowing if the sub is substring or not. What if substring occurs twice or more? As mentioned earlier, the find() will return the lowest index if the subst...
# Python program to find uncommon words from two string,# Getting strings as input from the userstr1=input('Enter first string : ')str2=input('Enter second string : ')# finding uncommon wordscount={}forwordinstr1.split():count[word]=count.get(word,0)+1forwordinstr2.split():count[wo...