Looking for some help in creating a dictionary using 3 python lists

a = ['alpha','bravo','charlie']
b = ['a','b','c']
c = [1,2,3]

output:
{'alpha': {'letter': 'a', 'number': 1},
 'bravo': {'letter': 'b', 'number': 2},
 'charlie': {'letter': 'c', 'number': 3}}

I tried something like this. This may be close, but needs some tweaking:

{k: dict(v) for k,v in zip(a, zip(('letter', b),('number', c)))}

>Solution :

The dict comprehension can zip all three iterables at once, and just include a dict literal for the sub-dict:

{k: {'letter': let, 'number': num} for k, let, num in zip(a, b, c)}