元组对象 ¶

PyTupleObject ¶

此子类型的 PyObject represents a Python tuple object.

PyTypeObject PyTuple_Type ¶

此实例的 PyTypeObject represents the Python tuple type; it is the same object as tuple 在 Python 层。

int PyTuple_Check ( PyObject  *p ) ¶

返回 True 若 p is a tuple object or an instance of a subtype of the tuple type.

int PyTuple_CheckExact ( PyObject  *p ) ¶

返回 True 若 p is a tuple object, but not an instance of a subtype of the tuple type.

PyObject * PyTuple_New ( Py_ssize_t  len ) ¶

返回值：新引用。

Return a new tuple object of size len ，或 NULL 当故障时。

PyObject * PyTuple_Pack ( Py_ssize_t  n , ... ) ¶

返回值：新引用。

Return a new tuple object of size n ，或 NULL on failure. The tuple values are initialized to the subsequent n C arguments pointing to Python objects. PyTuple_Pack(2, a, b) 相当于 Py_BuildValue("(OO)", a, b) .

Py_ssize_t PyTuple_Size ( PyObject  *p ) ¶

Take a pointer to a tuple object, and return the size of that tuple.

Py_ssize_t PyTuple_GET_SIZE ( PyObject  *p ) ¶

Return the size of the tuple p , which must be non- NULL and point to a tuple; no error checking is performed.

PyObject * PyTuple_GetItem ( PyObject  *p , Py_ssize_t  pos ) ¶

返回值：借位引用。

Return the object at position pos in the tuple pointed to by p 。若 pos is out of bounds, return NULL and sets an IndexError 异常。

PyObject * PyTuple_GET_ITEM ( PyObject  *p , Py_ssize_t  pos ) ¶

返回值：借位引用。

像 PyTuple_GetItem() , but does no checking of its arguments.

PyObject * PyTuple_GetSlice ( PyObject  *p , Py_ssize_t  low , Py_ssize_t  high ) ¶

返回值：新引用。

Take a slice of the tuple pointed to by p from low to high and return it as a new tuple.

int PyTuple_SetItem ( PyObject  *p , Py_ssize_t  pos , PyObject  *o ) ¶

Insert a reference to object o 在位置 pos of the tuple pointed to by p 。返回 0 当成功时。

注意

This function “steals” a reference to o .

void PyTuple_SET_ITEM ( PyObject  *p , Py_ssize_t  pos , PyObject  *o ) ¶

像 PyTuple_SetItem() , but does no error checking, and should only be used to fill in brand new tuples.

注意

This function “steals” a reference to o .

int _PyTuple_Resize ( PyObject  **p , Py_ssize_t  newsize ) ¶

Can be used to resize a tuple. newsize will be the new length of the tuple. Because tuples are supposed to be immutable, this should only be used if there is only one reference to the object. Do not use this if the tuple may already be known to some other part of the code. The tuple will always grow or shrink at the end. Think of this as destroying the old tuple and creating a new one, only more efficiently. Returns 0 on success. Client code should never assume that the resulting value of *p will be the same as before calling this function. If the object referenced by *p is replaced, the original *p is destroyed. On failure, returns -1 and sets *p to NULL , and raises MemoryError or SystemError .

int PyTuple_ClearFreeList ( ) ¶

Clear the free list. Return the total number of freed items.

结构序列对象 ¶

Struct sequence objects are the C equivalent of namedtuple() objects, i.e. a sequence whose items can also be accessed through attributes. To create a struct sequence, you first have to create a specific struct sequence type.

PyTypeObject * PyStructSequence_NewType ( PyStructSequence_Desc  *desc ) ¶

Create a new struct sequence type from the data in desc , described below. Instances of the resulting type can be created with PyStructSequence_New() .

void PyStructSequence_InitType ( PyTypeObject  *type , PyStructSequence_Desc  *desc ) ¶

Initializes a struct sequence type type from desc 原位。

int PyStructSequence_InitType2 ( PyTypeObject  *type , PyStructSequence_Desc  *desc ) ¶

如同 PyStructSequence_InitType ，但返回 0 on success and -1 当故障时。

3.4 版新增。

PyStructSequence_Desc ¶

Contains the meta information of a struct sequence type to create.

字段	C 类型	含义
name	char *	name of the struct sequence type
doc	char *	pointer to docstring for the type or NULL to omit
fields	PyStructSequence_Field *	pointer to NULL -terminated array with field names of the new type
n_in_sequence	int	number of fields visible to the Python side (if used as tuple)

PyStructSequence_Field ¶

Describes a field of a struct sequence. As a struct sequence is modeled as a tuple, all fields are typed as PyObject* . The index in the fields array of the PyStructSequence_Desc determines which field of the struct sequence is described.

字段	C 类型	含义
name	char *	name for the field or NULL to end the list of named fields, set to PyStructSequence_UnnamedField to leave unnamed
doc	char *	field docstring or NULL to omit

char* PyStructSequence_UnnamedField ¶

Special value for a field name to leave it unnamed.

PyObject * PyStructSequence_New ( PyTypeObject  *type ) ¶

Creates an instance of type , which must have been created with PyStructSequence_NewType() .

PyObject * PyStructSequence_GetItem ( PyObject  *p , Py_ssize_t  pos ) ¶

Return the object at position pos in the struct sequence pointed to by p . No bounds checking is performed.

PyObject * PyStructSequence_GET_ITEM ( PyObject  *p , Py_ssize_t  pos ) ¶

Macro equivalent of PyStructSequence_GetItem() .

void PyStructSequence_SetItem ( PyObject  *p , Py_ssize_t  pos , PyObject  *o ) ¶

Sets the field at index pos of the struct sequence p to value o 。像 PyTuple_SET_ITEM() , this should only be used to fill in brand new instances.

注意

This function “steals” a reference to o .

void PyStructSequence_SET_ITEM ( PyObject  *p , Py_ssize_t  *pos , PyObject  *o ) ¶

Macro equivalent of PyStructSequence_SetItem() .

注意

This function “steals” a reference to o .

内容表

• 元组对象
• 结构序列对象

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