Rindex() finds the position of the last occurrence of a substring in a given string. If not found, it returns an error message.
Example
#!/usr/bin/python3
str1 = "nice to meet you, George! have a nice day.....!!!"
str2 = "nice"
str3 = 'days'
# Find the index of last occurrence
print (str1.rindex(str2))
# Not found, return error
print (str1.rindex(str3))
Output:
33
Traceback (most recent call last):
File "main.py", line 10, in
print (str1.rindex(str3))
ValueError: substring not found
Syntax
str.rindex(substr, start = 0, end = len(string))
Parameters
| Name | Description |
| substr | Substring to be searched in the string |
| start | Optional, starting index of the search (inclusive) |
| end | Optional, ending index of the search (exclusive) |
Return Value
It returns the index of position where the substring appears for the last time.