Écrire un programme python FriendByAge.py pour trouver le nombre moyen d’amis dans un réseau social selon l’âge. on a les variables userID name age nbFriend Données : socialfriends.csv dans le dossier https://drive.google.com/open?id=1fSt2aFZryUiKBxI3aJXQnpezJ3xntESP le code python se fait comme suit from mrjob.job import MRJob import numpy class MRFriendByAge(MRJob): def mapper(self,key,line): (userID,name,age,number) = line.split(',') k = int(number) yield age,k def reducer(self,age,number1): sum = 0 count = 0 for n in number1: ...
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