def _apply_rule(self, dates):
        """
        Apply the given offset/observance to a DatetimeIndex of dates.

        Parameters
        ----------
        dates : DatetimeIndex
            Dates to apply the given offset/observance rule

        Returns
        -------
        Dates with rules applied
        """
        if self.observance is not None:
            return dates.map(lambda d: self.observance(d))

        if self.offset is not None:
            if not isinstance(self.offset, list):
                offsets = [self.offset]
            else:
                offsets = self.offset
            for offset in offsets:

                # if we are adding a non-vectorized value
                # ignore the PerformanceWarnings:
                with warnings.catch_warnings():
                    warnings.simplefilter("ignore", PerformanceWarning)
                    dates += offset
        return dates
def _apply_rule ( self , dates ) : if self . observance is not None : return dates . map ( lambda d : self . observance ( d ) ) if self . offset is not None : if not isinstance ( self . offset , list ) : offsets = [ self . offset ] else : offsets = self . offset for offset in offsets : with warnings . catch_warnings ( ) : warnings . simplefilter ( "ignore" , PerformanceWarning ) dates += offset return dates
Apply the given offset/observance to a DatetimeIndex of dates.

        Parameters
        ----------
        dates : DatetimeIndex
            Dates to apply the given offset/observance rule

        Returns
        -------
        Dates with rules applied