split a map into two maps in python

main.py
import copy

# original map
map1 = {
    'a': 1, 
    'b': 2, 
    'c': 3,
    'd': 4
}

# make a deep copy of the original map
map2 = copy.deepcopy(map1)

# remove some keys from map1
keys_to_remove = ['a', 'b']
for key in keys_to_remove:
    map1.pop(key)

# remove some keys from map2
keys_to_remove = ['c', 'd']
for key in keys_to_remove:
    map2.pop(key)

print(map1)  # {'c': 3}
print(map2)  # {'a': 1, 'b': 2}
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