How can I implement custom sorting in Python?

How can I implement custom sorting in Python?

You can use the sorted() function with a custom key. For example, sorted(list, key=lambda x: x[1]) sorts by the second element.

Can you show me an example with a list of tuples?

Sure! If you have a list like data = [(1, 'apple'), (3, 'banana'), (2, 'cherry')], you can sort it by the first element using sorted(data, key=lambda x: x[0]).

What if I want to sort it in descending order?

You can add the reverse=True parameter. For example, sorted(data, key=lambda x: x[0], reverse=True) will sort it in descending order.

Is there a way to sort by multiple criteria?

Yes! You can use a tuple in the key. For example, sorted(data, key=lambda x: (x[1], x[0])) sorts by the second element first, then by the first.