unt三个函数,分a = 'hello accountant'# Use the upper function to convert the string to uppercasea_upper = a.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) ...
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 def find_Index(str1, pos): # Check if pos lo...
print(quote.find('o small ',10,-1)) # Substring is searched in 'll things with'print(quote.find('things ',6,20)) Run Code Output -1 3 -1 9 Also Read: Python String index() Python String count()
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 String find() The find() method returns the lowest index of the substring if it is found in given string. If its is not found then it returns -1. Syntax : str.find(sub,start,end) Parameters : sub :It’s the substring which needs to be searched in the given string....
python学习string method: find and rfind python 自带的两个查找字符串的方法:find 和rfind. Python String find() Method Description: This method determines ifstroccurs in string, or in a substring of string if starting indexbegand ending indexendare given....
"Python" 的位置 index_in_range = my_string.find("Python", 0, 25) print(f"The substring 'Python' within range [0, 25) is found at index: {index_in_range}") # 查找不存在的子字符串 "Java" 的位置 index_not_found = my_string.find("Java") print(f"The substring 'Java' is not ...
2. 使用Python进行反向搜索 在字符串中进行反向搜索 在Python中,字符串可以使用切片和rfind()方法来进行反向搜索。rfind()方法返回最后一次出现指定子字符串的索引。如果找不到该子字符串,返回值为-1。 # 在字符串中反向搜索子字符串 substring = "Python" reverse_index = my_string.rfind(substring) # 输出查...
.index() Method .count() Method .replace Method Interactive Example 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) ...
Python字符串find()方法有助于查找给定字符串中子字符串首次出现的索引。 如果子字符串不存在,它将返回-1。 语法 string.find(substring,start,end) 参数 substring:要在给定字符串中搜索的子字符串。 start :(可选)从开始搜索子字符串的起始值。 默认情况下为0。