how to merge two dictionaries with same keys in python

from collections import defaultdict

d1 = {1: 2, 3: 4}
d2 = {1: 6, 3: 7}

dd = defaultdict(list)

for d in (d1, d2): # you can list as many input dicts as you want here
    for key, value in d.items():
        dd[key].append(value)

print(dd)

import string
for name in ["lloyd", "alice", "tyler"]:
    name = {"name": string.capitalize(name), "homework": [], "quizzes": [], "tests": []}