code: def _set_attr(self, name, doc=None, preload=False):
          "Initially sets up an attribute."
  
          if doc is None:
              doc = 'The {name} attribute.'.format(name=name)
  
          if not hasattr(self._attr_func_, name):
              attr_prop = property(
                  functools.partial(self._setable_get_, name),
                  functools.partial(self._setable_set_, name),
                  doc=doc
              )
  
          elif preload:
              func = getattr(self._attr_func_, name)
              setattr(self._attr_data_, name, func())
              delattr(self._attr_func_, name)
              attr_prop = property(
                  functools.partial(self._simple_get_, name),
                  doc=doc
              )
  
          else:
              attr_prop = property(
                  functools.partial(self._loadable_get_, name),
                  doc=doc
              )
  
          setattr(type(self), name, attr_propf _set_attr(self, name, doc=None, preload=False):
          "Initially sets up an attribute."
  
          if doc is None:
              doc = 'The {name} attribute.'.format(name=name)
  
          if not hasattr(self._attr_func_, name):
              attr_prop = property(
                  functools.partial(self._setable_get_, name),
                  functools.partial(self._setable_set_, name),
                  doc=doc
              )
  
          elif preload:
              func = getattr(self._attr_func_, name)
              setattr(self._attr_data_, name, func())
              delattr(self._attr_func_, name)
              attr_prop = property(
                  functools.partial(self._simple_get_, name),
                  doc=doc
              )
  
          else:
              attr_prop = property(
                  functools.partial(self._loadable_get_, name),
                  doc=doc
              )
  
          setattr(type(self), name, attr_prop)
docs: Initially sets up an attribute.