How to use the pysces.core2.PyscesCore2.SpeciesAssignmentRule function in pysces

def setAssignmentRules(self):
        aps = [self.__rules__[ar]['name'] for ar in self.__rules__ if self.__rules__[ar]['type'] == 'assignment']
        ##  for p in self.global_parameters + [self.get(fs) for fs in self.hasFixedSpecies()]:
        for p in self.global_parameters + self.species:
            #print p.name
            if p.name in aps:
                if self.__DEBUG__: print('Assigning: %s = %s' % (p.name, self.__rules__[p.name]['formula']))
                p2 = None
                # TODO: make better
                if p.name in self.hasGlobalParameters():
                    p2 = AssignmentRule(p.name, self.__InitDict__[p.name])
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceParameterWithRule(p2)
                elif p.name in self.hasFixedSpecies():
                    p2 = SpeciesAssignmentRule(p.name, self.__InitDict__[p.name])
                    p2.setCompartment(p.getCompartment())
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceFixedSpeciesWithRule(p2)
                elif p.name in self.hasVariableSpecies():
                    p2 = SpeciesAssignmentRule(p.name, self.__InitDict__[p.name])
                    p2.setCompartment(p.getCompartment())
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceSpeciesWithRule(p2)

                assert isinstance(p2, AssignmentRule) or isinstance(p2, SpeciesAssignmentRule), "\nHappy assertion error"
                #print type(p2)
                p2.addFormula(self.__rules__[p.name]['formula'])
                ##  print p2._names
                for n in p2._names+p2._functions:
                    p2.addModelAttr(self.__getattribute__(n))
                ##  # setup initial values

#print p.name
            if p.name in aps:
                if self.__DEBUG__: print('Assigning: %s = %s' % (p.name, self.__rules__[p.name]['formula']))
                p2 = None
                # TODO: make better
                if p.name in self.hasGlobalParameters():
                    p2 = AssignmentRule(p.name, self.__InitDict__[p.name])
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceParameterWithRule(p2)
                elif p.name in self.hasFixedSpecies():
                    p2 = SpeciesAssignmentRule(p.name, self.__InitDict__[p.name])
                    p2.setCompartment(p.getCompartment())
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceFixedSpeciesWithRule(p2)
                elif p.name in self.hasVariableSpecies():
                    p2 = SpeciesAssignmentRule(p.name, self.__InitDict__[p.name])
                    p2.setCompartment(p.getCompartment())
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceSpeciesWithRule(p2)

                assert isinstance(p2, AssignmentRule) or isinstance(p2, SpeciesAssignmentRule), "\nHappy assertion error"
                #print type(p2)
                p2.addFormula(self.__rules__[p.name]['formula'])
                ##  print p2._names
                for n in p2._names+p2._functions:
                    p2.addModelAttr(self.__getattribute__(n))
                ##  # setup initial values
                ##  p2.value_initial = self.p2()
                if p2.name in self.__not_inited__:
                    self.__not_inited__.pop(self.__not_inited__.index(p.name))
        for p in self.global_parameters:
            if p.name in self.hasAssignmentRules():

if p.name in self.hasGlobalParameters():
                    p2 = AssignmentRule(p.name, self.__InitDict__[p.name])
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceParameterWithRule(p2)
                elif p.name in self.hasFixedSpecies():
                    p2 = SpeciesAssignmentRule(p.name, self.__InitDict__[p.name])
                    p2.setCompartment(p.getCompartment())
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceFixedSpeciesWithRule(p2)
                elif p.name in self.hasVariableSpecies():
                    p2 = SpeciesAssignmentRule(p.name, self.__InitDict__[p.name])
                    p2.setCompartment(p.getCompartment())
                    setattr(p2, '_TIME_', self._TIME_)
                    self.replaceSpeciesWithRule(p2)

                assert isinstance(p2, AssignmentRule) or isinstance(p2, SpeciesAssignmentRule), "\nHappy assertion error"
                #print type(p2)
                p2.addFormula(self.__rules__[p.name]['formula'])
                ##  print p2._names
                for n in p2._names+p2._functions:
                    p2.addModelAttr(self.__getattribute__(n))
                ##  # setup initial values
                ##  p2.value_initial = self.p2()
                if p2.name in self.__not_inited__:
                    self.__not_inited__.pop(self.__not_inited__.index(p.name))
        for p in self.global_parameters:
            if p.name in self.hasAssignmentRules():
                # TODO assignment rules need a list of properties
                for ar in p._names:
                    if ar in self.hasAssignmentRules():
                        setattr(p, ar, self.__getattribute__(ar))
        #TODO this is where things will go wrong if fs --> ar contains nested ar's