Question

How to create a dictionary with default values in Python

Answer 1

from collections import defaultdict

ddict = defaultdict(int)

print(ddict)  

ddict['key1'] += 11
ddict['key2'] += 22

print(ddict)  

for key, value in ddict.items():
    print(key, value)



'''
run:

defaultdict(<class 'int'>, {})
defaultdict(<class 'int'>, {'key1': 11, 'key2': 22})
key1 11
key2 22

'''

 

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