import datetime

class DatePattern:

    def __init__(self, year, month, day, weekday=0):
        self.year = year
        self.month = month
        self.day = day
        self.weekday = weekday

    def matches(self, date):
        return (self.yearMatches(date) and
                self.monthMatches(date) and
                self.dayMatches(date) and
                self.weekdayMatches(date))

    def yearMatches(self, date):
        if not self.year: return True
        return self.year == date.year

    def monthMatches(self, date):
        if not self.month: return True
        return self.month == date.month

    def dayMatches(self, date):
        if not self.day: return True
        return self.day == date.day

    def weekdayMatches(self, date):
        if not self.weekday: return True
        return self.weekday == date.weekday()