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() 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()...
defis_substring(actual_str,pattern_str): ifactual_strisNoneorpattern_strisNone: print'empty string' return iflen(pattern_str)>len(actual_str): print'substring pattern is longer than catual string' return indexes=[] foriinrange(len(actual_str) - len(pattern_str) + 1): ifpattern_str[0...
print("Contains substring 'be,'")else: print("Doesn't contain substring") 输出 Substring 'let it': 11 Substring 'small ': -1 Contains substring 'be,' 示例2:find() 带有 start 和 end 参数 quote ='Do small things with great love'# Substringissearchedin'hings with great love'print(quote...
substring = "world" # 在整个字符串中查找子串 index_full = text.find(substring) print("Index in full string:", index_full) # 输出: Index in full string: 7 # 从特定位置开始查找子串 index_from_5 = text.find(substring, 5) print("Index starting from index 5:", index_from_5) # 输出...
python全栈开发《22.字符串的startswith和endswith函数》 endswith和startswith也可以对完整(整体)的字符串进行判断。 info.endswith('this is a string example!!')或info.startswith('this is a string example!!')相当于bool(info == 'this is a string example!!'),效果是一样的。
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) ...
upper()print(a_upper) # Output: 'HELLO ACCOUNTANT'# Use the find function to find the index of a substring in the stringindex = a.find('accoun')print(index) # Output: 6# Use the count function to count the number of occurrences of a substring in the stringcount = a...
python string find没找到返回什么 本文实例讲述了Python数据类型之String字符串。分享给大家供大家参考,具体如下: String(字符串) 1、概述 字符串是以单引号或双引号括起来的任意文本,比如"abc",‘xy'等等,请注意‘'或者""本身只是一种表示方式,并不是字符串的一部分。
0 - This is a modal window. No compatible source was found for this media. Example If the substring is not found in the given range, then '-1' is printed as output. Following is an example for this. str1="Hello! Welcome to Tutorialspoint."str2="to";result=str1.find(str2,25)prin...