如何从字典中的元组列表中提取值？

Question

d={'Test':'Math','results':[{'name':'Paul','score':78},{'name':'Ann','score':87},{'name':'John','score':82}]}

I have this dictionary with a list inside. I would like to sum the score: 78+87+82. I've tried some approaches, but I failed. Help me, please! PS.: I use Python 3.5

Answer 1

dct = {'Test':'Math','results':[{'name':'Paul','score':78},{'name':'Ann','score':87},{'name':'John','score':82}]}

print(sum(d["score"] for d in dct["results"]))

dct["results"] is the list of dicts ie:

[{'name':'Paul','score':78},{'name':'Ann','score':87},{'name':'John','score':82}], `

d["score"] for d accesses the in each dict using the score key in that list and we just sum all those values we extract.

Answer 2

I've got this solution:

def sumScores(d):
    score=0
    for element in d['results']:
        score += element['score']
    return score

Tip: I see that your question is voted down, it's because that's a simple problem that you CAN solve yourself. Try to solve it B4 asking 4 help.