集对象 ¶

This section details the public API for set and frozenset objects. Any functionality not listed below is best accessed using either the abstract object protocol (including PyObject_CallMethod() , PyObject_RichCompareBool() , PyObject_Hash() , PyObject_Repr() , PyObject_IsTrue() , PyObject_Print() ，和 PyObject_GetIter() ) or the abstract number protocol (including PyNumber_And() , PyNumber_Subtract() , PyNumber_Or() , PyNumber_Xor() , PyNumber_InPlaceAnd() , PyNumber_InPlaceSubtract() , PyNumber_InPlaceOr() ，和 PyNumber_InPlaceXor() ).

type PySetObject ¶

此子类型的 PyObject is used to hold the internal data for both set and frozenset objects. It is like a PyDictObject in that it is a fixed size for small sets (much like tuple storage) and will point to a separate, variable sized block of memory for medium and large sized sets (much like list storage). None of the fields of this structure should be considered public and all are subject to change. All access should be done through the documented API rather than by manipulating the values in the structure.

PyTypeObject PySet_Type ¶

属于 稳定 ABI (应用程序二进制接口) .

This is an instance of PyTypeObject representing the Python set 类型。

PyTypeObject PyFrozenSet_Type ¶

属于 稳定 ABI (应用程序二进制接口) .

This is an instance of PyTypeObject representing the Python frozenset 类型。

The following type check macros work on pointers to any Python object. Likewise, the constructor functions work with any iterable Python object.

int PySet_Check ( PyObject * p ) ¶

返回 True 若 p 是 set object or an instance of a subtype. This function always succeeds.

int PyFrozenSet_Check ( PyObject * p ) ¶

返回 True 若 p 是 frozenset object or an instance of a subtype. This function always succeeds.

int PyAnySet_Check ( PyObject * p ) ¶

返回 True 若 p 是 set 对象， frozenset object, or an instance of a subtype. This function always succeeds.

int PySet_CheckExact ( PyObject * p ) ¶

返回 True 若 p 是 set object but not an instance of a subtype. This function always succeeds.

3.10 版新增。

int PyAnySet_CheckExact ( PyObject * p ) ¶

返回 True 若 p 是 set 对象或 frozenset object but not an instance of a subtype. This function always succeeds.

int PyFrozenSet_CheckExact ( PyObject * p ) ¶

返回 True 若 p 是 frozenset object but not an instance of a subtype. This function always succeeds.

PyObject * PySet_New ( PyObject * iterable ) ¶

返回值：新引用。 属于 稳定 ABI (应用程序二进制接口) .

返回新的 set containing objects returned by the iterable 。 iterable 可以是 NULL to create a new empty set. Return the new set on success or NULL on failure. Raise TypeError if iterable is not actually iterable. The constructor is also useful for copying a set ( c=set(s) ).

PyObject * PyFrozenSet_New ( PyObject * iterable ) ¶

返回值：新引用。 属于 稳定 ABI (应用程序二进制接口) .

返回新的 frozenset containing objects returned by the iterable 。 iterable 可以是 NULL to create a new empty frozenset. Return the new set on success or NULL on failure. Raise TypeError if iterable is not actually iterable.

The following functions and macros are available for instances of set or frozenset or instances of their subtypes.

Py_ssize_t PySet_Size ( PyObject * anyset ) ¶

属于 稳定 ABI (应用程序二进制接口) .

Return the length of a set or frozenset object. Equivalent to len(anyset) 。引发 PyExc_SystemError if anyset is not a set , frozenset , or an instance of a subtype.

Py_ssize_t PySet_GET_SIZE ( PyObject * anyset ) ¶

Macro form of PySet_Size() without error checking.

int PySet_Contains ( PyObject * anyset , PyObject * key ) ¶

属于 稳定 ABI (应用程序二进制接口) .

返回 1 if found, 0 if not found, and -1 if an error is encountered. Unlike the Python __contains__() method, this function does not automatically convert unhashable sets into temporary frozensets. Raise a TypeError 若 key is unhashable. Raise PyExc_SystemError if anyset is not a set , frozenset , or an instance of a subtype.

int PySet_Add ( PyObject * set , PyObject * key ) ¶

属于 稳定 ABI (应用程序二进制接口) .

添加 key 到 set instance. Also works with frozenset instances (like PyTuple_SetItem() it can be used to fill in the values of brand new frozensets before they are exposed to other code). Return 0 当成功时或 -1 on failure. Raise a TypeError 若 key is unhashable. Raise a MemoryError if there is no room to grow. Raise a SystemError if set 不是实例化的 set or its subtype.

The following functions are available for instances of set or its subtypes but not for instances of frozenset or its subtypes.

int PySet_Discard ( PyObject * set , PyObject * key ) ¶

属于 稳定 ABI (应用程序二进制接口) .

返回 1 if found and removed, 0 if not found (no action taken), and -1 if an error is encountered. Does not raise KeyError for missing keys. Raise a TypeError 若 key is unhashable. Unlike the Python discard() method, this function does not automatically convert unhashable sets into temporary frozensets. Raise PyExc_SystemError if set 不是实例化的 set or its subtype.

PyObject * PySet_Pop ( PyObject * set ) ¶

返回值：新引用。 属于 稳定 ABI (应用程序二进制接口) .

Return a new reference to an arbitrary object in the set , and removes the object from the set 。返回 NULL on failure. Raise KeyError if the set is empty. Raise a SystemError if set 不是实例化的 set or its subtype.

int PySet_Clear ( PyObject * set ) ¶

属于 稳定 ABI (应用程序二进制接口) .

Empty an existing set of all elements.

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