Tuple Objects
*************

type PyTupleObject

   This subtype of "PyObject" represents a Python tuple object.

PyTypeObject PyTuple_Type
    * Część stabilnego ABI.*

   This instance of "PyTypeObject" represents the Python tuple type;
   it is the same object as "tuple" in the Python layer.

int PyTuple_Check(PyObject *p)

   Return true if *p* is a tuple object or an instance of a subtype of
   the tuple type.  This function always succeeds.

int PyTuple_CheckExact(PyObject *p)

   Return true if *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)
    *Wartość zwracana: nowa referencja.** Część stabilnego ABI.*

   Return a new tuple object of size *len*, or "NULL" on failure.

PyObject *PyTuple_Pack(Py_ssize_t n, ...)
    *Wartość zwracana: nowa referencja.** Część stabilnego ABI.*

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

Py_ssize_t PyTuple_Size(PyObject *p)
    * Część stabilnego ABI.*

   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)
    *Wartość zwracana: pożyczona referencja.** Część stabilnego ABI.*

   Return the object at position *pos* in the tuple pointed to by *p*.
   If *pos* is negative or out of bounds, return "NULL" and set an
   "IndexError" exception.

PyObject *PyTuple_GET_ITEM(PyObject *p, Py_ssize_t pos)
    *Wartość zwracana: pożyczona referencja.*

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

PyObject *PyTuple_GetSlice(PyObject *p, Py_ssize_t low, Py_ssize_t high)
    *Wartość zwracana: nowa referencja.** Część stabilnego ABI.*

   Return the slice of the tuple pointed to by *p* between *low* and
   *high*, or "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)
    * Część stabilnego ABI.*

   Insert a reference to object *o* at position *pos* of the tuple
   pointed to by *p*.  Return "0" on success.  If *pos* is out of
   bounds, return "-1" and set an "IndexError" exception.

   Informacja:

     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)

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

   Informacja:

     This function "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".


Struct Sequence Objects
***********************

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)
    *Wartość zwracana: nowa referencja.** Część stabilnego ABI.*

   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* in place.

int PyStructSequence_InitType2(PyTypeObject *type, PyStructSequence_Desc *desc)

   The same as "PyStructSequence_InitType", but returns "0" on success
   and "-1" on failure.

   Nowe w wersji 3.4.

type PyStructSequence_Desc
    * Część stabilnego ABI (w tym wszystkie składniki).*

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

   const char *name

      Name of the struct sequence type.

   const char *doc

      Pointer to docstring for the type or "NULL" to omit.

   PyStructSequence_Field *fields

      Pointer to "NULL"-terminated array with field names of the new
      type.

   int n_in_sequence

      Number of fields visible to the Python side (if used as tuple).

type PyStructSequence_Field
    * Część stabilnego ABI (w tym wszystkie składniki).*

   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.

   const char *name

      Name for the field or "NULL" to end the list of named fields,
      set to "PyStructSequence_UnnamedField" to leave unnamed.

   const char *doc

      Field docstring or "NULL" to omit.

const char *const PyStructSequence_UnnamedField
    * Część stabilnego ABI od wersji 3.11.*

   Special value for a field name to leave it unnamed.

   Zmienione w wersji 3.9: The type was changed from "char *".

PyObject *PyStructSequence_New(PyTypeObject *type)
    *Wartość zwracana: nowa referencja.** Część stabilnego ABI.*

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

PyObject *PyStructSequence_GetItem(PyObject *p, Py_ssize_t pos)
    *Wartość zwracana: pożyczona referencja.** Część stabilnego ABI.*

   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)
    *Wartość zwracana: pożyczona referencja.*

   Macro equivalent of "PyStructSequence_GetItem()".

void PyStructSequence_SetItem(PyObject *p, Py_ssize_t pos, PyObject *o)
    * Część stabilnego ABI.*

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

   Informacja:

     This function "steals" a reference to *o*.

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

   Similar to "PyStructSequence_SetItem()", but implemented as a
   static inlined function.

   Informacja:

     This function "steals" a reference to *o*.
