# Python Program to Sort a List of Tuples in Increasing Order by the Last Element in Each Tuple

Sorting a list of tuples in increasing order by the last element in each tuple is a common task in programming. Tuples are ordered collections of elements, and sometimes you might want to sort a list of tuples based on a specific element within each tuple.

## Problem Statement

You are given a list of tuples, where each tuple contains a sequence of elements. Your task is to implement a function in Python that sorts this list of tuples in increasing order based on the last element of each tuple.

## Python Program to Sort a List of Tuples in Increasing Order by the Last Element in Each Tuple

```def sort_tuples_by_last_element(lst):
return sorted(lst, key=lambda x: x[-1])

# Example list of tuples
tuple_list = [(1, 4), (3, 2), (8, 9), (5, 7)]

sorted_list = sort_tuples_by_last_element(tuple_list)
print(sorted_list)
```

## How it Works

1. Defining the Function: We start by defining the `sort_tuples_by_last_element(lst)` function. This function takes a list of tuples `lst` as an argument.
2. Using the `sorted()` Function: Inside the function, we use the `sorted()` function to perform the sorting. The `sorted()` function takes two important parameters:
• `iterable`: This is the list of tuples we want to sort.
• `key`: This is a function that takes an element from the `iterable` and returns a value based on which the sorting is done.
3. Lambda Function for Sorting: In the `key` parameter of the `sorted()` function, we use a lambda function to specify that we want to sort based on the last element of each tuple. The lambda function `lambda x: x[-1]` takes a tuple `x` and returns its last element, which is used for sorting.
4. Result: The `sorted()` function returns a new list containing the sorted tuples. This list is assigned to the `sorted_list` variable.
5. Returning the Result: Finally, the `sort_tuples_by_last_element()` function returns the `sorted_list`.