Generate date range from start date for N days

date_range_n_days.py

import datetime as dt
import operator as op


def date_iterator(from_date, days, reverse=False):
    func = op.sub if reverse else op.add
    return (func(from_date, dt.timedelta(days=d)) for d in range(days))


def date_range(from_date, to_date, inclusive=True):
    days = (to_date - from_date).days
    if inclusive:
        days += 1
    return date_iterator(from_date, days)


if __name__ == '__main__':
    start_date = dt.datetime(2017, 3, 18)
    days = 100

    for d in date_iterator(start_date, 200, reverse=True):
        print(d)

    end_date = dt.datetime(2017, 3, 18)

    for d in date_range(start_date, end_date, inclusive=True):
        print(d)