Path 1: 218 calls (0.99)

→ year 2004 (103) 2017 (27) 0 (25) 9999 (15) 1 (14) 2001 (2) 1995 (2) 1987 (2) 1988 (2) 1999 (2)

→ month 12 (40) 1 (29) 2 (29) 4 (22) 5 (14) 3 (12) 6 (12) 7 (12) 8 (12) 9 (12)

↩ return (0, 31) (30) (2, 31) (29) (3, 31) (21) (6, 31) (16) (5, 31) (16) (4, 31) (14) (3, 30) (13) (2, 30) (12) (6, 29) (11) (0, 30) (10)

4 run 1 not run

1def monthrange(year, month):
2    """Return weekday (0-6 ~ Mon-Sun) and number of days (28-31) for
3       year, month."""
4    if not 1 <= month <= 12:
5        raise IllegalMonthError(month)
6    day1 = weekday(year, month, 1)
7    ndays = mdays[month] + (month == February and isleap(year))
8    return day1, ndays
            

Path 2: 3 calls (0.01)

→ year 2004 (3)

→ month 65 (1) 13 (1) 0 (1)

⚠ exception IllegalMonthError (3)

2 run 3 not run

1def monthrange(year, month):
2    """Return weekday (0-6 ~ Mon-Sun) and number of days (28-31) for
3       year, month."""
4    if not 1 <= month <= 12:
5        raise IllegalMonthError(month)
6    day1 = weekday(year, month, 1)
7    ndays = mdays[month] + (month == February and isleap(year))
8    return day1, ndays