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.. highlight:: c
Frame Objects
-------------
.. c:type:: PyFrameObject
The C structure of the objects used to describe frame objects.
There are no public members in this structure.
.. versionchanged:: 3.11
The members of this structure were removed from the public C API.
Refer to the :ref:`What's New entry <pyframeobject-3.11-hiding>`
for details.
The :c:func:`PyEval_GetFrame` and :c:func:`PyThreadState_GetFrame` functions
can be used to get a frame object.
See also :ref:`Reflection <reflection>`.
.. c:var:: PyTypeObject PyFrame_Type
The type of frame objects.
It is the same object as :py:class:`types.FrameType` in the Python layer.
.. versionchanged:: 3.11
Previously, this type was only available after including
``<frameobject.h>``.
.. c:function:: int PyFrame_Check(PyObject *obj)
Return non-zero if *obj* is a frame object.
.. versionchanged:: 3.11
Previously, this function was only available after including
``<frameobject.h>``.
.. c:function:: PyFrameObject* PyFrame_GetBack(PyFrameObject *frame)
Get the *frame* next outer frame.
Return a :term:`strong reference`, or ``NULL`` if *frame* has no outer
frame.
.. versionadded:: 3.9
.. c:function:: PyObject* PyFrame_GetBuiltins(PyFrameObject *frame)
Get the *frame*'s ``f_builtins`` attribute.
Return a :term:`strong reference`. The result cannot be ``NULL``.
.. versionadded:: 3.11
.. c:function:: PyCodeObject* PyFrame_GetCode(PyFrameObject *frame)
Get the *frame* code.
Return a :term:`strong reference`.
The result (frame code) cannot be ``NULL``.
.. versionadded:: 3.9
.. c:function:: PyObject* PyFrame_GetGenerator(PyFrameObject *frame)
Get the generator, coroutine, or async generator that owns this frame,
or ``NULL`` if this frame is not owned by a generator.
Does not raise an exception, even if the return value is ``NULL``.
Return a :term:`strong reference`, or ``NULL``.
.. versionadded:: 3.11
.. c:function:: PyObject* PyFrame_GetGlobals(PyFrameObject *frame)
Get the *frame*'s ``f_globals`` attribute.
Return a :term:`strong reference`. The result cannot be ``NULL``.
.. versionadded:: 3.11
.. c:function:: int PyFrame_GetLasti(PyFrameObject *frame)
Get the *frame*'s ``f_lasti`` attribute.
Returns -1 if ``frame.f_lasti`` is ``None``.
.. versionadded:: 3.11
.. c:function:: PyObject* PyFrame_GetVar(PyFrameObject *frame, PyObject *name)
Get the variable *name* of *frame*.
* Return a :term:`strong reference` to the variable value on success.
* Raise :exc:`NameError` and return ``NULL`` if the variable does not exist.
* Raise an exception and return ``NULL`` on error.
*name* type must be a :class:`str`.
.. versionadded:: 3.12
.. c:function:: PyObject* PyFrame_GetVarString(PyFrameObject *frame, const char *name)
Similar to :c:func:`PyFrame_GetVar`, but the variable name is a C string
encoded in UTF-8.
.. versionadded:: 3.12
.. c:function:: PyObject* PyFrame_GetLocals(PyFrameObject *frame)
Get the *frame*'s ``f_locals`` attribute (:class:`dict`).
Return a :term:`strong reference`.
.. versionadded:: 3.11
.. c:function:: int PyFrame_GetLineNumber(PyFrameObject *frame)
Return the line number that *frame* is currently executing.
Internal Frames
^^^^^^^^^^^^^^^
Unless using :pep:`523`, you will not need this.
.. c:struct:: _PyInterpreterFrame
The interpreter's internal frame representation.
.. versionadded:: 3.11
.. c:function:: PyObject* PyUnstable_InterpreterFrame_GetCode(struct _PyInterpreterFrame *frame);
Return a :term:`strong reference` to the code object for the frame.
.. versionadded:: 3.12
.. c:function:: int PyUnstable_InterpreterFrame_GetLasti(struct _PyInterpreterFrame *frame);
Return the byte offset into the last executed instruction.
.. versionadded:: 3.12
.. c:function:: int PyUnstable_InterpreterFrame_GetLine(struct _PyInterpreterFrame *frame);
Return the currently executing line number, or -1 if there is no line number.
.. versionadded:: 3.12
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