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. This function always succeeds.

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. This function always succeeds.

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 set 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。
Return the slice of the tuple pointed to by p between low and high ，或 NULL on failure. This is the equivalent of the Python expression p[low:high] . Indexing from the end of the list is not supported.

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 on success. If pos is out of bounds, return -1 and set an IndexError 异常。

注意

This function “steals” a reference to o and discards a reference to an item already in the tuple at the affected position.

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 macro “steals” a reference to o , and, unlike PyTuple_SetItem() , does not discard a reference to any item that is being replaced; any reference in the tuple at position pos will be leaked.

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 .

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 ) ¶: 返回值：新引用。
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`	`const char *`	name of the struct sequence type
`doc`	`const 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`	`const char *`	name for the field or `NULL` to end the list of named fields, set to `PyStructSequence_UnnamedField` to leave unnamed
`doc`	`const char *`	field docstring or `NULL` to omit

const char * const PyStructSequence_UnnamedField ¶: Special value for a field name to leave it unnamed.

3.9 版改变： The type was changed from char * .

PyObject * PyStructSequence_New ( PyTypeObject *type ) ¶: 返回值：新引用。
Creates an instance of type , which must have been created with PyStructSequence_NewType() .

PyObject * PyStructSequence_GetItem ( PyObject *p , Py_ssize_t pos ) ¶: 返回值：借位引用。
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 ) ¶: 返回值：借位引用。
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 .

元组对象 ¶

结构序列对象 ¶

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