Method append

src/dateutil/parser/_parser.py:428–454

(self, val, label=None)

            return 1 <= value <= monthrange(year, month)[1]

    def append(self, val, label=None):
        if hasattr(val, '__len__'):
            if val.isdigit() and len(val) > 2:
                self.century_specified = True
                if label not in [None, 'Y']:  # pragma: no cover
                    raise ValueError(label)
                label = 'Y'
        elif val > 100:
            self.century_specified = True
            if label not in [None, 'Y']:  # pragma: no cover
                raise ValueError(label)
            label = 'Y'

        super(self.__class__, self).append(int(val))

        if label == 'M':
            if self.has_month:
                raise ValueError('Month is already set')
            self.mstridx = len(self) - 1
        elif label == 'D':
            if self.has_day:
                raise ValueError('Day is already set')
            self.dstridx = len(self) - 1
        elif label == 'Y':
            if self.has_year:
                raise ValueError('Year is already set')
            self.ystridx = len(self) - 1

    def _resolve_from_stridxs(self, strids):
        """