- `find_last_occurrence` 函数:定义了一个函数,接收两个参数:`input_string`(输入字符串)和 `target_char`(目标字符)。使用字符串的 `rfind()` 方法来从右向左查找 `target_char` 的位置,并返回最后一次出现的索引。如果未找到,则返回 `-1`。 - 测试函数:使用示例字符串 `"hello world, hello python"...
为了更好地理解rfind()方法,我们可以创建一个简单的类图来表示字符串和它的方法: String+rfind(substring, start)+find_last_occurrence(text, char_to_find) 在这个类图中,String类有一个rfind()方法,它接受两个参数:substring是要查找的子字符串,start是搜索的起始位置(可选)。find_last_occurrence是一个示例方...
# 定义字符串和目标字符input_string="Find the last occurrence of character in this string"target_char="i"# 使用 rfind 方法查找目标字符最后一次出现的位置last_position=input_string.rfind(target_char)# 检查返回值iflast_position!=-1:print(f"The last occurrence of '{target_char}' is at position...
Split the string at the last 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 two empty strings, followed by the string itself. New in versi...
Split the string at the last 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 two empty strings, followed by the string itself. ...
test="Python Programming"print("String: ",test)# First one character first_character=test[:1]print("First Character: ",first_character)# Last one character last_character=test[-1:]print("Last Character: ",last_character)# Everything except the first one character except_first=test[1:]print...
str.find(sub[, start[, end]])在字符串中查找sub,找到后返回位置,没找到返回-1. Return the lowest index in the string where substring sub is found, such that sub is contained in the range [start, end]. Optional arguments start and end are interpreted as in slice notation. Return -1 if...
Split string on last delimiter occurrence. Write a Python program to split a string on the last occurrence of the delimiter. Sample Solution: Python Code: # Define a string 'str1' containing a comma-separated list of characters.str1="w,3,r,e,s,o,u,r,c,e"# Split the string 'str1...
The find() method returns the index number of the first occurrence of the given search term in the specified string. find() returns -1 if.
Because of this, the last occurrence of "oo" isn’t counted..find(sub[, start[, end]])You can use .find() to check whether a string contains a particular substring. Calling .find(sub) returns the lowest index in the target string where sub is found:...