summaryrefslogtreecommitdiffstats
path: root/Doc/c-api/frame.rst
blob: b81faab1d97009ae7bb0e3fbf65bfa403854649e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
.. 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: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.