Days in Month: Solution

def days_in_month(date):
    """How many days are there in a month?"""

    # START SOLUTION

    month, year = date.split()
    month = int(month)
    year = int(year)

    # Account for February

    if month == 2:
        if is_leap_year(year):
            return 29
        else:
            return 28

    if month in {1, 3, 5, 7, 8, 10, 12}:
        return 31

    if month in {4, 6, 9, 11}:
        return 30