Sort Counter by frequency, then alphabetically in Python

Question

I am trying to use counter to sort letters by occurrence, and put any that have the same frequency into alphabetical order, but I can\'t get access to the Value of the dicti

Answer 1

For the sake of completeness, to get the single-occurrence letters in alphabetical order:

letter_count = collections.Counter("alphabet")

single_occurrences = sorted([letter for letter, occurrence in letter_count.items() if occurrence == 1])
print(single_occurrences)
# prints: ['b', 'e', 'h', 'l', 'p', 't']