Python time.microsecond方法代码示例

# 需要导入模块: from datetime import time [as 别名]
# 或者: from datetime.time import microsecond [as 别名]
def _partial_date_slice(self, reso, parsed, use_lhs=True, use_rhs=True):
        is_monotonic = self.is_monotonic
        if (is_monotonic and reso in ['day', 'hour', 'minute', 'second'] and
                self._resolution >= Resolution.get_reso(reso)):
            # These resolution/monotonicity validations came from GH3931,
            # GH3452 and GH2369.

            # See also GH14826
            raise KeyError

        if reso == 'microsecond':
            # _partial_date_slice doesn't allow microsecond resolution, but
            # _parsed_string_to_bounds allows it.
            raise KeyError

        t1, t2 = self._parsed_string_to_bounds(reso, parsed)
        stamps = self.asi8

        if is_monotonic:

            # we are out of range
            if (len(stamps) and ((use_lhs and t1.value < stamps[0] and
                                  t2.value < stamps[0]) or
                                 ((use_rhs and t1.value > stamps[-1] and
                                   t2.value > stamps[-1])))):
                raise KeyError

            # a monotonic (sorted) series can be sliced
            left = stamps.searchsorted(
                t1.value, side='left') if use_lhs else None
            right = stamps.searchsorted(
                t2.value, side='right') if use_rhs else None

            return slice(left, right)

        lhs_mask = (stamps >= t1.value) if use_lhs else True
        rhs_mask = (stamps <= t2.value) if use_rhs else True

        # try to find a the dates
        return (lhs_mask & rhs_mask).nonzero()[0] 

# 需要导入模块: from datetime import time [as 别名]
# 或者: from datetime.time import microsecond [as 别名]
def to_julian_date(self):
        """
        Convert DatetimeIndex to Float64Index of Julian Dates.
        0 Julian date is noon January 1, 4713 BC.
        http://en.wikipedia.org/wiki/Julian_day
        """

        # http://mysite.verizon.net/aesir_research/date/jdalg2.htm
        year = np.asarray(self.year)
        month = np.asarray(self.month)
        day = np.asarray(self.day)
        testarr = month < 3
        year[testarr] -= 1
        month[testarr] += 12
        return Float64Index(day +
                            np.fix((153 * month - 457) / 5) +
                            365 * year +
                            np.floor(year / 4) -
                            np.floor(year / 100) +
                            np.floor(year / 400) +
                            1721118.5 +
                            (self.hour +
                             self.minute / 60.0 +
                             self.second / 3600.0 +
                             self.microsecond / 3600.0 / 1e+6 +
                             self.nanosecond / 3600.0 / 1e+9
                             ) / 24.0) 

# 需要导入模块: from datetime import time [as 别名]
# 或者: from datetime.time import microsecond [as 别名]
def resolution(self):
        """
        Returns day, hour, minute, second, or microsecond
        """
        reso = self._resolution
        return get_reso_string(reso) 

# 需要导入模块: from datetime import time [as 别名]
# 或者: from datetime.time import microsecond [as 别名]
def slice_indexer(self, start=None, end=None, step=None, kind=None):
        """
        Return indexer for specified label slice.
        Index.slice_indexer, customized to handle time slicing.

        In addition to functionality provided by Index.slice_indexer, does the
        following:

        - if both `start` and `end` are instances of `datetime.time`, it
          invokes `indexer_between_time`
        - if `start` and `end` are both either string or None perform
          value-based selection in non-monotonic cases.

        """
        # For historical reasons DatetimeIndex supports slices between two
        # instances of datetime.time as if it were applying a slice mask to
        # an array of (self.hour, self.minute, self.seconds, self.microsecond).
        if isinstance(start, time) and isinstance(end, time):
            if step is not None and step != 1:
                raise ValueError('Must have step size of 1 with time slices')
            return self.indexer_between_time(start, end)

        if isinstance(start, time) or isinstance(end, time):
            raise KeyError('Cannot mix time and non-time slice keys')

        try:
            return Index.slice_indexer(self, start, end, step, kind=kind)
        except KeyError:
            # For historical reasons DatetimeIndex by default supports
            # value-based partial (aka string) slices on non-monotonic arrays,
            # let's try that.
            if ((start is None or isinstance(start, compat.string_types)) and
                    (end is None or isinstance(end, compat.string_types))):
                mask = True
                if start is not None:
                    start_casted = self._maybe_cast_slice_bound(
                        start, 'left', kind)
                    mask = start_casted <= self

                if end is not None:
                    end_casted = self._maybe_cast_slice_bound(
                        end, 'right', kind)
                    mask = (self <= end_casted) & mask

                indexer = mask.nonzero()[0][::step]
                if len(indexer) == len(self):
                    return slice(None)
                else:
                    return indexer
            else:
                raise

    # --------------------------------------------------------------------
    # Wrapping DatetimeArray

    # Compat for frequency inference, see GH#23789 

# 需要导入模块: from datetime import time [as 别名]
# 或者: from datetime.time import microsecond [as 别名]
def slice_indexer(self, start=None, end=None, step=None, kind=None):
        """
        Return indexer for specified label slice.
        Index.slice_indexer, customized to handle time slicing.

        In addition to functionality provided by Index.slice_indexer, does the
        following:

        - if both `start` and `end` are instances of `datetime.time`, it
          invokes `indexer_between_time`
        - if `start` and `end` are both either string or None perform
          value-based selection in non-monotonic cases.

        """
        # For historical reasons DatetimeIndex supports slices between two
        # instances of datetime.time as if it were applying a slice mask to
        # an array of (self.hour, self.minute, self.seconds, self.microsecond).
        if isinstance(start, time) and isinstance(end, time):
            if step is not None and step != 1:
                raise ValueError('Must have step size of 1 with time slices')
            return self.indexer_between_time(start, end)

        if isinstance(start, time) or isinstance(end, time):
            raise KeyError('Cannot mix time and non-time slice keys')

        try:
            return Index.slice_indexer(self, start, end, step, kind=kind)
        except KeyError:
            # For historical reasons DatetimeIndex by default supports
            # value-based partial (aka string) slices on non-monotonic arrays,
            # let's try that.
            if ((start is None or isinstance(start, compat.string_types)) and
                    (end is None or isinstance(end, compat.string_types))):
                mask = True
                if start is not None:
                    start_casted = self._maybe_cast_slice_bound(
                        start, 'left', kind)
                    mask = start_casted <= self

                if end is not None:
                    end_casted = self._maybe_cast_slice_bound(
                        end, 'right', kind)
                    mask = (self <= end_casted) & mask

                indexer = mask.nonzero()[0][::step]
                if len(indexer) == len(self):
                    return slice(None)
                else:
                    return indexer
            else:
                raise 

# 需要导入模块: from datetime import time [as 别名]
# 或者: from datetime.time import microsecond [as 别名]
def slice_indexer(self, start=None, end=None, step=None, kind=None):
        """
        Return indexer for specified label slice.
        Index.slice_indexer, customized to handle time slicing.

        In addition to functionality provided by Index.slice_indexer, does the
        following:

        - if both `start` and `end` are instances of `datetime.time`, it
          invokes `indexer_between_time`
        - if `start` and `end` are both either string or None perform
          value-based selection in non-monotonic cases.

        """
        # For historical reasons DatetimeIndex supports slices between two
        # instances of datetime.time as if it were applying a slice mask to
        # an array of (self.hour, self.minute, self.seconds, self.microsecond).
        if isinstance(start, time) and isinstance(end, time):
            if step is not None and step != 1:
                raise ValueError('Must have step size of 1 with time slices')
            return self.indexer_between_time(start, end)

        if isinstance(start, time) or isinstance(end, time):
            raise KeyError('Cannot mix time and non-time slice keys')

        try:
            return Index.slice_indexer(self, start, end, step, kind=kind)
        except KeyError:
            # For historical reasons DatetimeIndex by default supports
            # value-based partial (aka string) slices on non-monotonic arrays,
            # let's try that.
            if ((start is None or isinstance(start, compat.string_types)) and
                    (end is None or isinstance(end, compat.string_types))):
                mask = True
                if start is not None:
                    start_casted = self._maybe_cast_slice_bound(
                        start, 'left', kind)
                    mask = start_casted <= self

                if end is not None:
                    end_casted = self._maybe_cast_slice_bound(
                        end, 'right', kind)
                    mask = (self <= end_casted) & mask

                indexer = mask.nonzero()[0][::step]
                if len(indexer) == len(self):
                    return slice(None)
                else:
                    return indexer
            else:
                raise

    # alias to offset