githubmirror/cpython

Doc/c-api/gen.rst

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Antonio Cuni

bpo-42528: Improve the docs of most Py*_Check{,Exact} API calls (GH-23602)

06 янв 2021, 14:38

06 янв 2021, 14:38315fc52

.. highlight:: c

.. _gen-objects:

Generator Objects
-----------------

Generator objects are what Python uses to implement generator iterators. They
are normally created by iterating over a function that yields values, rather
than explicitly calling :c:func:`PyGen_New` or :c:func:`PyGen_NewWithQualName`.


.. c:type:: PyGenObject

   The C structure used for generator objects.


.. c:var:: PyTypeObject PyGen_Type

   The type object corresponding to generator objects.


.. c:function:: int PyGen_Check(PyObject *ob)

   Return true if *ob* is a generator object; *ob* must not be ``NULL``.  This
   function always succeeds.


.. c:function:: int PyGen_CheckExact(PyObject *ob)

   Return true if *ob*'s type is :c:type:`PyGen_Type`; *ob* must not be
   ``NULL``.  This function always succeeds.


.. c:function:: PyObject* PyGen_New(PyFrameObject *frame)

   Create and return a new generator object based on the *frame* object.
   A reference to *frame* is stolen by this function. The argument must not be
   ``NULL``.

.. c:function:: PyObject* PyGen_NewWithQualName(PyFrameObject *frame, PyObject *name, PyObject *qualname)

   Create and return a new generator object based on the *frame* object,
   with ``__name__`` and ``__qualname__`` set to *name* and *qualname*.
   A reference to *frame* is stolen by this function.  The *frame* argument
   must not be ``NULL``.