Calculate a number of days between two datesΒΆ

Calculate a number of days between two dates.
import datetime
from datetime import date

def differ_days(date1, date2):

    a = date1
    b = date2

    return (a-b).days

print(differ_days((date(2016, 10, 12)), date(2015, 12, 10)))
print(differ_days((date(2016, 3, 23)), date(2017, 12, 10)))

Output:

307
-627