create dict with multiple values out of two lists. group multiple keys into one

Question

I have two list:

lists = [\'a\',\'b\',\'c\',\'d\',\'e\']
keys = [18,18,3,4,5]

what I want is a dictionary like this:

{18:[\'a\',\'         


        

Answer 1

You can try this:

dicts = {key: [] for key in keys}
for k, v in zip(keys, lists):
    dicts[k].append(v)

or

from collections import defaultdict
dicts = defaultdict(list)
for k, v in zip(keys, lists):
    dicts[k].append(v)

Output:

{18: ['a', 'b'], 3: ['c'], 4: ['d'], 5: ['e']}