映射协议

int PyMapping_Check ( PyObject  *o )

返回 1 if the object provides mapping protocol, and 0 otherwise. This function always succeeds.

Py_ssize_t PyMapping_Size ( PyObject  *o )
Py_ssize_t PyMapping_Length ( PyObject  *o )

Returns the number of keys in object o on success, and -1 on failure. For objects that do not provide mapping protocol, this is equivalent to the Python expression len(o) .

int PyMapping_DelItemString ( PyObject  *o , const char  *key )

Remove the mapping for object key from the object o 。返回 -1 on failure. This is equivalent to the Python statement del o[key] .

int PyMapping_DelItem ( PyObject  *o , PyObject  *key )

Remove the mapping for object key from the object o 。返回 -1 on failure. This is equivalent to the Python statement del o[key] .

int PyMapping_HasKeyString ( PyObject  *o , const char  *key )

On success, return 1 if the mapping object has the key key and 0 otherwise. This is equivalent to the Python expression key in o . This function always succeeds.

int PyMapping_HasKey ( PyObject  *o , PyObject  *key )

返回 1 if the mapping object has the key key and 0 otherwise. This is equivalent to the Python expression key in o . This function always succeeds.

PyObject * PyMapping_Keys ( PyObject  *o )
返回值:新引用。

On success, return a list or tuple of the keys in object o . On failure, return NULL .

PyObject * PyMapping_Values ( PyObject  *o )
返回值:新引用。

On success, return a list or tuple of the values in object o . On failure, return NULL .

PyObject * PyMapping_Items ( PyObject  *o )
返回值:新引用。

On success, return a list or tuple of the items in object o , where each item is a tuple containing a key-value pair. On failure, return NULL .

PyObject * PyMapping_GetItemString ( PyObject  *o , const char  *key )
返回值:新引用。

Return element of o corresponding to the object key or NULL on failure. This is the equivalent of the Python expression o[key] .

int PyMapping_SetItemString ( PyObject  *o , const char  *key , PyObject  *v )

Map the object key to the value v 在对象 o 。返回 -1 on failure. This is the equivalent of the Python statement o[key] = v .