listrindex

A lightweight Python utility that allows you to find the last index of an element in a list — something the built-in list.index() method does not support.

📌 Description

In Python, list.index(x) returns the first index of x in a list.
The listrindex class provides the method rindex(list, object) that returns the last index where the object appears.

This is especially useful when working with large datasets or when you want to find the last occurrence of repeated elements.

✅ Features

• Returns the last index of a given value in a list.
• Works with integers, strings, or any data type.
• Raises ValueError if the element is not found, just like list.index().

🧪 Usage

from listrindex import listrindex

mylist = [5, 3, 7, 3, 9, 3]
value = 3

r = listrindex()
print(r.rindex(mylist, value))  # Output: 5 (last index of 3)