code: def axisinfo(unit, axis):
          
          tz = unit
  
          majloc = PandasAutoDateLocator(tz=tz)
          majfmt = PandasAutoDateFormatter(majloc, tz=tz)
          datemin = pydt.date(2000, 1, 1)
          datemax = pydt.date(2010, 1, 1)
  
          return units.AxisInfo(majloc=majloc, majfmt=majfmt, label='',
                                default_limits=(datemin, datemax))
docs: Return the :class:`~matplotlib.units.AxisInfo` for *unit*.
  
          *unit* is a tzinfo instance or None.
          The *axis* argument is required but not used.