How to use multiple keys when sorting?
Question:
There’s this list that I want to sort:
table = [("A", 5, 3), ("B", 5, 6), ("C", 3, 1)]
Inside each tuple, let’s call the elements name, points, ex, in that order.
I want to sort that list by descending order of points, that’s simple enough.
But if points are the same for 2 tuples, I’ll sort those by ascending order of ex.
How can I go about doing this?
Answers:
You can use the "sorted" built-in function with custom ordering function. If you want to make values to be ordered descendently, it’s sufficient to use negatives of the same values.
sorted(table, key = lambda x: (-x[1], x[2]))
Output:
[('A', 5, 3), ('B', 5, 6), ('C', 3, 1)]
There’s this list that I want to sort:
table = [("A", 5, 3), ("B", 5, 6), ("C", 3, 1)]
Inside each tuple, let’s call the elements name, points, ex, in that order.
I want to sort that list by descending order of points, that’s simple enough.
But if points are the same for 2 tuples, I’ll sort those by ascending order of ex.
How can I go about doing this?
You can use the "sorted" built-in function with custom ordering function. If you want to make values to be ordered descendently, it’s sufficient to use negatives of the same values.
sorted(table, key = lambda x: (-x[1], x[2]))
Output:
[('A', 5, 3), ('B', 5, 6), ('C', 3, 1)]