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。 sh-3ll

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#ifndef Py_DICTOBJECT_H
#define Py_DICTOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif

/* Dictionary object type -- mapping from hashable object to object */

/* The distribution includes a separate file, Objects/dictnotes.txt,
   describing explorations into dictionary design and optimization.
   It covers typical dictionary use patterns, the parameters for
   tuning dictionaries, and several ideas for possible optimizations.
*/

PyAPI_DATA(PyTypeObject) PyDict_Type;

#define PyDict_Check(op) \
                 PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_DICT_SUBCLASS)
#define PyDict_CheckExact(op) (Py_TYPE(op) == &PyDict_Type)

PyAPI_FUNC(PyObject *) PyDict_New(void);
PyAPI_FUNC(PyObject *) PyDict_GetItem(PyObject *mp, PyObject *key);
PyAPI_FUNC(PyObject *) PyDict_GetItemWithError(PyObject *mp, PyObject *key);
PyAPI_FUNC(int) PyDict_SetItem(PyObject *mp, PyObject *key, PyObject *item);
PyAPI_FUNC(int) PyDict_DelItem(PyObject *mp, PyObject *key);
PyAPI_FUNC(void) PyDict_Clear(PyObject *mp);
PyAPI_FUNC(int) PyDict_Next(
    PyObject *mp, Py_ssize_t *pos, PyObject **key, PyObject **value);
PyAPI_FUNC(PyObject *) PyDict_Keys(PyObject *mp);
PyAPI_FUNC(PyObject *) PyDict_Values(PyObject *mp);
PyAPI_FUNC(PyObject *) PyDict_Items(PyObject *mp);
PyAPI_FUNC(Py_ssize_t) PyDict_Size(PyObject *mp);
PyAPI_FUNC(PyObject *) PyDict_Copy(PyObject *mp);
PyAPI_FUNC(int) PyDict_Contains(PyObject *mp, PyObject *key);

/* PyDict_Update(mp, other) is equivalent to PyDict_Merge(mp, other, 1). */
PyAPI_FUNC(int) PyDict_Update(PyObject *mp, PyObject *other);

/* PyDict_Merge updates/merges from a mapping object (an object that
   supports PyMapping_Keys() and PyObject_GetItem()).  If override is true,
   the last occurrence of a key wins, else the first.  The Python
   dict.update(other) is equivalent to PyDict_Merge(dict, other, 1).
*/
PyAPI_FUNC(int) PyDict_Merge(PyObject *mp,
                             PyObject *other,
                             int override);

/* PyDict_MergeFromSeq2 updates/merges from an iterable object producing
   iterable objects of length 2.  If override is true, the last occurrence
   of a key wins, else the first.  The Python dict constructor dict(seq2)
   is equivalent to dict={}; PyDict_MergeFromSeq(dict, seq2, 1).
*/
PyAPI_FUNC(int) PyDict_MergeFromSeq2(PyObject *d,
                                     PyObject *seq2,
                                     int override);

PyAPI_FUNC(PyObject *) PyDict_GetItemString(PyObject *dp, const char *key);
PyAPI_FUNC(int) PyDict_SetItemString(PyObject *dp, const char *key, PyObject *item);
PyAPI_FUNC(int) PyDict_DelItemString(PyObject *dp, const char *key);

/* Dictionary (keys, values, items) views */

PyAPI_DATA(PyTypeObject) PyDictKeys_Type;
PyAPI_DATA(PyTypeObject) PyDictValues_Type;
PyAPI_DATA(PyTypeObject) PyDictItems_Type;

#define PyDictKeys_Check(op) PyObject_TypeCheck(op, &PyDictKeys_Type)
#define PyDictValues_Check(op) PyObject_TypeCheck(op, &PyDictValues_Type)
#define PyDictItems_Check(op) PyObject_TypeCheck(op, &PyDictItems_Type)
/* This excludes Values, since they are not sets. */
# define PyDictViewSet_Check(op) \
    (PyDictKeys_Check(op) || PyDictItems_Check(op))

/* Dictionary (key, value, items) iterators */

PyAPI_DATA(PyTypeObject) PyDictIterKey_Type;
PyAPI_DATA(PyTypeObject) PyDictIterValue_Type;
PyAPI_DATA(PyTypeObject) PyDictIterItem_Type;

PyAPI_DATA(PyTypeObject) PyDictRevIterKey_Type;
PyAPI_DATA(PyTypeObject) PyDictRevIterItem_Type;
PyAPI_DATA(PyTypeObject) PyDictRevIterValue_Type;


#ifndef Py_LIMITED_API
#  define Py_CPYTHON_DICTOBJECT_H
#  include  "cpython/dictobject.h"
#  undef Py_CPYTHON_DICTOBJECT_H
#endif

#ifdef __cplusplus
}
#endif
#endif /* !Py_DICTOBJECT_H */