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) .

Changed in version 2.5: These functions returned an int type. This might require changes in your code for properly supporting 64-bit systems.

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

On success, return 1 if the mapping object has the key key and 0 otherwise. This is equivalent to o[key] ，返回 True on success and False on an exception. 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 o[key] ，返回 True on success and False on an exception. This function always succeeds.

PyObject * PyMapping_Keys ( PyObject *o ) ¶

返回值：新引用。

On success, return a list of the keys in object o . On failure, return NULL . This is equivalent to the Python expression o.keys() .

PyObject * PyMapping_Values ( PyObject *o ) ¶

返回值：新引用。

On success, return a list of the values in object o . On failure, return NULL . This is equivalent to the Python expression o.values() .

PyObject * PyMapping_Items ( PyObject *o ) ¶

返回值：新引用。

On success, return a list of the items in object o , where each item is a tuple containing a key-value pair. On failure, return NULL . This is equivalent to the Python expression o.items() .

PyObject * PyMapping_GetItemString ( PyObject *o , 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 , 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 .

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