def z(self):
        "Day of the year; i.e. '0' to '365'"
        doy = self.year_days[self.data.month] + self.data.day
        if self.L() or self.data.month > 2:
            doy += 1
        return doy
dataset/ETHPy150Open django/django/django/utils/dateformat.py/DateFormat.z/operator `and` -> `or`