String rindex() Method in Python 3
The rindex() method returns the last index where the substring str is found, or
raises an exception if no such index exists, optionally
restricting the search to string[beg:end].
Syntax
|
str.rindex(str,
beg=0 end=len(string))
|
Parameters
·
str - This specifies the string to be searched.
·
beg - This is the starting index, by default its
0.
·
len - This is ending index, by default its equal
to the length of the string.
Return Value
This method returns last index if found
otherwise raises an exception if str is not found.
Example
|
#!/usr/bin/python3
str1 =
"this is really a string example....wow!!!"
str2 =
"is"
print
(str1.rindex(str2))
print
(str1.rindex(str2,10))
|
Result
|
5
Traceback
(most recent call last):
File
"test.py", line 5, in
print
(str1.rindex(str2,10))
ValueError:
substring not found
|
