Created from Iterable

{number: letter for letter, number in zip('abcdefghijklmnopqrstuvwxyz', range(1, 27))}

Output

{1: 'a', 2: 'b', 3: 'c', 4: 'd', 5: 'e', 6: 'f', 7: 'g', 8: 'h', 9: 'i', 10: 'j', 11: 'k', 12: 'l', 13: 'm', 14: 'n', 15: 'o', 16: 'p', 17: 'q', 18: 'r', 19: 's', 20: 't', 21: 'u', 22: 'v', 23: 'w', 24: 'x', 25: 'y', 26: 'z'}

Fizz Buzz (List Comprehension Inside Dicts)

total_nums = range(1, 101)
fizzbuzzes = {
    'fizz': [n for n in total_nums if n % 3 == 0], 
    'buzz': [n for n in total_nums if n % 7 == 0]
}

Output

>>> fizzbuzzes

{'fizz': [3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99], 'buzz': [7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98]}