gistfile1.txt

#!/usr/bin/env python3
import datetime
from dateutil.relativedelta import relativedelta

# 2019-08-02
begin_date = datetime.datetime.utcnow()

def get_months(from_date, days):
    date_pairs = []
    for offset in range(days + 1):
        curr_date = from_date + relativedelta(days=-offset)
        date_pairs.append((curr_date.year, curr_date.month))

    return tuple(set(date_pairs))

print(get_months(begin_date, 50))