When we develope in Python, we often have to search within strings. The strings' **`rindex()` method** is used to search the last occurrence within a string. When it fails, it raises an exception.

# Syntax
```PY
string.rindex(substring[, start[, end]] )
```
- `substring` is the string  we are searching.
- `start` and `end` are not mandatory and can be used to define a substring where the search should be done. Start is 0 by default.
# Example

mystring = "Hello educative!"
print(mystring.rindex('e'))
print(mystring.rindex('e', 4, 9))

What is the rindex() method for strings in Python?

Find the last occurrence of a substring in a string with rindex(). Raises an exception on failure. Start and end parameters are optional.