Category "tuples"

How to sort a list with two keys but one in reverse order?

I was wondering what would be a Pythonic way of sorting a list of tuples by two keys whereby sorting with one (and only one) key would be in a reverse order and

Creating a Python function that will create a dictionary for tuples of character counts, assigned to a key of either vowels, consonants or others

So, trying to create a function that takes a string input, and with that input, it counts all the instances of all characters to a dictionary (like {'a':5, 'b':