code: def get_timefactor(cls) -> float:
          
          try:
              parfactor = hydpy.pub.timegrids.parfactor
          except RuntimeError:
              if not (cls.parameterstep and cls.simulationstep):
                  raise RuntimeError(
                      f'To calculate the conversion factor for adapting '
                      f'the values of the time-dependent parameters, '
                      f'you need to define both a parameter and a simulation '
                      f'time step size first.')
              else:
                  date1 = timetools.Date('2000.01.01')
                  date2 = date1 + cls.simulationstep
                  parfactor = timetools.Timegrids(timetools.Timegrid(
                      date1, date2, cls.simulationstep)).parfactor
          return parfactor(cls.parameterstep)
docs: Factor to adjust a new value of a time-dependent parameter.
  
          For a time-dependent parameter, its effective value depends on the
          simulation step size.  Method |Parameter.get_timefactor| returns
          the fraction between the current simulation step size and the
          current parameter step size.
  
          .. testsetup::
  
              >>> from hydpy import pub
              >>> del pub.timegrids
              >>> from hydpy.core.parametertools import Parameter
              >>> Parameter.simulationstep.delete()
              Period()
  
          Method |Parameter.get_timefactor| raises the following error
          when time information is not available:
  
          >>> from hydpy.core.parametertools import Parameter
          >>> Parameter.get_timefactor()
          Traceback (most recent call last):
          ...
          RuntimeError: To calculate the conversion factor for adapting the \
  values of the time-dependent parameters, you need to define both a \
  parameter and a simulation time step size first.
  
          One can define both time step sizes directly:
  
          >>> _ = Parameter.parameterstep('1d')
          >>> _ = Parameter.simulationstep('6h')
          >>> Parameter.get_timefactor()
          0.25
  
          As usual, the "global" simulation step size of the |Timegrids|
          object of module |pub| is prefered:
  
          >>> from hydpy import pub
          >>> pub.timegrids = '2000-01-01', '2001-01-01', '12h'
          >>> Parameter.get_timefactor()
          0.5