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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_subprocess(self, name, proc):
 """Adds a single subprocess to this process. :param string name: name of the subprocess :param proc: a Process object :type proc: :class:`~climlab.process.process.Process` :raises: :exc:`ValueError` if ``proc`` is not a process :Example: Replacing an albedo subprocess through adding a subprocess with same name:: .. code-block:: none :emphasize-lines: 8 climlab Process of type <class 'climlab.model.ebm.EBM_seasonal'>. State variables and domain shapes: Ts: (90, 1) The subprocess tree: top: <class 'climlab.model.ebm.EBM_seasonal'> diffusion: <class 'climlab.dynamics.diffusion.MeridionalDiffusion'> LW: <class 'climlab.radiation.AplusBT.AplusBT'> albedo: <class 'climlab.surface.albedo.P2Albedo'> insolation: <class 'climlab.radiation.insolation.DailyInsolation'> :: .. code-block:: none :emphasize-lines: 8 climlab Process of type <class 'climlab.model.ebm.EBM_seasonal'>. State variables and domain shapes: Ts: (90, 1) The subprocess tree: top: <class 'climlab.model.ebm.EBM_seasonal'> diffusion: <class 'climlab.dynamics.diffusion.MeridionalDiffusion'> LW: <class 'climlab.radiation.AplusBT.AplusBT'> albedo: <class 'climlab.surface.albedo.StepFunctionAlbedo'> iceline: <class 'climlab.surface.albedo.Iceline'> cold_albedo: <class 'climlab.surface.albedo.ConstantAlbedo'> warm_albedo: <class 'climlab.surface.albedo.P2Albedo'> insolation: <class 'climlab.radiation.insolation.DailyInsolation'> """

        if isinstance(proc, Process):
            self.subprocess.update({name: proc})
            self.has_process_type_list = False
            # Add subprocess diagnostics to parent
            #  (if there are no name conflicts)
            for diagname, value in proc.diagnostics.items():
                #if not (diagname in self.diagnostics or hasattr(self, diagname)):
                #    self.add_diagnostic(diagname, value)
                self.add_diagnostic(diagname, value)
        else:
            raise ValueError('subprocess must be Process object')