code: def get_locator(self, dmin, dmax):
          'Pick the best locator based on a distance.'
          _check_implicitly_registered()
          delta = relativedelta(dmax, dmin)
  
          num_days = (delta.years * 12.0 + delta.months) * 31.0 + delta.days
          num_sec = (delta.hours * 60.0 + delta.minutes) * 60.0 + delta.seconds
          tot_sec = num_days * 86400. + num_sec
  
          if abs(tot_sec) < self.minticks:
              self._freq = -1
              locator = MilliSecondLocator(self.tz)
              locator.set_axis(self.axis)
  
              locator.set_view_interval(*self.axis.get_view_interval())
              locator.set_data_interval(*self.axis.get_data_interval())
              return locator
  
          return dates.AutoDateLocator.get_locator(self, dmin, dmaxf get_locator(self, dmin, dmax):
          'Pick the best locator based on a distance.'
          _check_implicitly_registered()
          delta = relativedelta(dmax, dmin)
  
          num_days = (delta.years * 12.0 + delta.months) * 31.0 + delta.days
          num_sec = (delta.hours * 60.0 + delta.minutes) * 60.0 + delta.seconds
          tot_sec = num_days * 86400. + num_sec
  
          if abs(tot_sec) < self.minticks:
              self._freq = -1
              locator = MilliSecondLocator(self.tz)
              locator.set_axis(self.axis)
  
              locator.set_view_interval(*self.axis.get_view_interval())
              locator.set_data_interval(*self.axis.get_data_interval())
              return locator
  
          return dates.AutoDateLocator.get_locator(self, dmin, dmax)
docs: Pick the best locator based on a distance.