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How do I count dictionary elements?
datum:
I need to implement a phone account function, which receives a phonebook and returns the amount of registered phone numbers.
If there are repeat phones (the schedule_best example has!), count repetitions (answer 4)
The code I created is not working:
0
Looks like you want to work with the dictionary keys in the loop for. In this case, use:
for pessoa in agenda.keys():
0
Tatiane, this is a map => reduce.
You apply a function to the data, and then you add it all up:
from functools import reduce
def conta_telefones(agenda):
comprimentos = map(lambda dados:len(dados.get('telefones')),
agenda.values())
return reduce(lambda total, v: total + v,
comprimentos)
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or was it something like that? def conta_phones(phonebook): cont = 0 for person in phonebook: for phone in person: if phonebook[person][phone] is not None: cont += Len(person[phone]) Return cont
– tatiane berrocal
Please click on [Edit] and put the code as text. Putting it as an image is not ideal, understand the reasons reading the FAQ.
– hkotsubo
But just to advance one of the problems (I didn’t test the code, so I don’t know if it’s the only problem): the key to the dictionaries is "phones" (plural). but vc is trying to access "phone" (singular). I also did not understand why the result should be 4, and only one of the phones is repeated.
– hkotsubo
Hello Tatiane, new questions about Python code, you are doing an academic work?
– Ernesto Casanova
Reinforcing, puts JSON and python code data with accents
– Ernesto Casanova