CODEWITHSUNDEEP
pythondictionarysum
Asteroid098
Asteroid098

Reputation: 2825

Sum of values in a dictionary error 'int' object is not iterable

I have multiple dictionaries nested within a list mydict and one of the keys 'dummy' has values 0 or 1, and I want to add all of these values. I indexed the key correctly but I'm not getting the sum, the error reads 'int' object is not iterable

mydict = [{'name':'John', 'dummy': 1},{'name':'Brad','dummy': 0}]    
for i in range(len(mydict)):
 print sum(mydict[i]['dummy'])

Since my dictionaries are nested, mydict[i]['dummy'] is either 0 or 1, and type(mydict[0]['dummy']) is an integer.

I'm not sure why then I can't get the sum using the loop above.

Upvotes: 0

Views: 370

Answers (1)

VMRuiz
VMRuiz

Reputation: 1981

sum()expect an iterable and as you said mydict[0]['dummy'] is an integer.

Try this:

list_of_dicts = [{'name':'John', 'dummy': 1},{'name':'Brad','dummy': 0}]
print sum([element['dummy'] for element in list_of_dicts ] )

This will create a list with the dummy values on the dict and them it will add them.

Upvotes: 2

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