          fields = self.get_fields(instance)
  
          # serialize each required field 
          for fname in fields:
              if fname in instance:
                  # finally check for a key 'fname' on the instance
                  obj = instance[fname]
              elif hasattr(self, smart_str(fname)):
                  # check for a method 'fname' on self first
                  meth = getattr(self, fname)
                  if inspect.ismethod(meth) and len(inspect.getargspec(meth)[0]) == 2:
                      obj = meth(instance)
              elif hasattr(instance, smart_str(fname)):
                  # now check for an attribute 'fname' on the instance
 
</s> remove                 # now check for an attribute 'fname' on the instance
 </s> add                 # finally check for an attribute 'fname' on the instance
            if hasattr(self, smart_str(fname)):
                # check first for a method 'fname' on self first
          fields = self.get_fields(instance)
  
          # serialize each required field 
          for fname in fields:
            if hasattr(self, smart_str(fname)):
                # check first for a method 'fname' on self first
            if hasattr(self, smart_str(fname)):
                # check first for a method 'fname' on self first
            if hasattr(self, smart_str(fname)):
                # check first for a method 'fname' on self first
            if hasattr(self, smart_str(fname)):
                # check first for a method 'fname' on self first
            if hasattr(self, smart_str(fname)):
                # check first for a method 'fname' on self first
                  meth = getattr(self, fname)
                  if inspect.ismethod(meth) and len(inspect.getargspec(meth)[0]) == 2:
                      obj = meth(instance)
              elif hasattr(instance, smart_str(fname)):
                  # now check for an attribute 'fname' on the instance
keep keep keep keep replace replace replace replace replace keep keep keep keep keep
 fixed a bug in serializers 
djangorestframework/serializer.py