>>> p.article_views('en.wikipedia', ['Bug report'], granularity='monthly', start='20220101', end='20220228')
defaultdict(<class 'dict'>, {datetime.datetime(2022, 1, 1, 0, 0): {'Bug_report': 262}, datetime.datetime(2022, 2, 1, 0, 0): {'Bug_report': 266}})