API.py

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


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


url = '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 '

#url = '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 '

data = loads(urlopen(url).read().decode('utf8'))
revision = data['query']['pages']['183903']['revisions']


for convert_date, count in groupby(revision, convert_date):
    print(convert_date, sum(1 for _ in count))