api.py

import datetime
from itertools import groupby
from urllib.request import urlopen
from json import loads

#Данные для Александра Градского
url1 = 'https://ru.wikipedia.org/w/api.php?action=query&format=json&prop=revisions&rvlimit=500&titles=%D0%93%D1%80%D0%B0%D0%B4%D1%81%D0%BA%D0%B8%D0%B9,_%D0%90%D0%BB%D0%B5%D0%BA%D1%81%D0%B0%D0%BD%D0%B4%D1%80_%D0%91%D0%BE%D1%80%D0%B8%D1%81%D0%BE%D0%B2%D0%B8%D1%87'
id1 = '183903'

#Для  Жан-Поля Бельмондо
url2 = 'https://ru.wikipedia.org/w/api.php?action=query&format=json&prop=revisions&rvlimit=500&titles=%D0%91%D0%B5%D0%BB%D1%8C%D0%BC%D0%BE%D0%BD%D0%B4%D0%BE,_%D0%96%D0%B0%D0%BD-%D0%9F%D0%BE%D0%BB%D1%8C'
id2 = '192203'

def return_data(url, id):
    data = loads(urlopen(url).read().decode('utf8'))
    return data['query']['pages'][id]['revisions']

def convert_date(r):
    return datetime.datetime.strptime(r['timestamp'], '%Y-%m-%dT%H:%M:%SZ').date()

def get_result(url, id):
    for key, group_items in groupby(return_data(url, id), key=convert_date):
            print(key, sum(1 for i in group_items))

#get_result(url1, id1)
get_result(url2, id2)