Python - Ordenamiento alfabetico y numerico de listas en python

{'a': [5,12,23,34], 'b':[2,34,56,334], 'c':[34], 'd':[3,32]  }

{'b': ['2', '334', '34', '56'], 'a': ['12', '23', '34', '5'], 'c': ['34'], 'd': ['3', '32']}

#!/usr/bin/env python

from collections import OrderedDict

a = [

    'b/34',

    'b/56',

    'b/2',

    'b/334',

    'a/12',

    'a/23',

    'a/34',

    'a/5',

    'c/34',

    'd/32',

    'd/3']

b = {}

for i in a:

    letter, number = i.split('/')

    if letter in b:

        b[letter].append(number)

    else:

           b[letter] = [number]

    for i in b:

        b[i].sort()

        result = OrderedDict()

        keys = list(b.keys())

        for key in keys:

            result[key] = b[key]

        print(dict(result))

original = {'a': [5,12,23,34], 'b':[2,34,56,334], 'c':[34], 'd':[3,32]  }

temporal = sorted(original.items())

original.clear()

for elem in temporal:

    original[elem[0]] = elem[1]

print(original)