晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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.. highlightlang:: c

.. _descriptor-objects:

Descriptor Objects
------------------

"Descriptors" are objects that describe some attribute of an object. They are
found in the dictionary of type objects.


.. c:var:: PyTypeObject PyProperty_Type

   The type object for the built-in descriptor types.

   .. versionadded:: 2.2


.. c:function:: PyObject* PyDescr_NewGetSet(PyTypeObject *type, struct PyGetSetDef *getset)

   .. versionadded:: 2.2


.. c:function:: PyObject* PyDescr_NewMember(PyTypeObject *type, struct PyMemberDef *meth)

   .. versionadded:: 2.2


.. c:function:: PyObject* PyDescr_NewMethod(PyTypeObject *type, struct PyMethodDef *meth)

   .. versionadded:: 2.2


.. c:function:: PyObject* PyDescr_NewWrapper(PyTypeObject *type, struct wrapperbase *wrapper, void *wrapped)

   .. versionadded:: 2.2


.. c:function:: PyObject* PyDescr_NewClassMethod(PyTypeObject *type, PyMethodDef *method)

   .. versionadded:: 2.3


.. c:function:: int PyDescr_IsData(PyObject *descr)

   Return true if the descriptor objects *descr* describes a data attribute, or
   false if it describes a method.  *descr* must be a descriptor object; there is
   no error checking.

   .. versionadded:: 2.2


.. c:function:: PyObject* PyWrapper_New(PyObject *, PyObject *)

   .. versionadded:: 2.2

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