# Frame objects

type PyFrameObject
  Część ograniczonego API (jako nieprzezroczysta struktura).

  The C structure of the objects used to describe frame objects.

  There are no public members in this structure.

  Zmienione w wersji 3.11: The members of this structure were removed from the public C API. Refer to the What’s New entry for details.

The `PyEval_GetFrame()` and `PyThreadState_GetFrame()` functions can be used to get a frame object.

See also Reflection.

PyTypeObject PyFrame_Type

  The type of frame objects. It is the same object as `types.FrameType` in the Python layer.

  Zmienione w wersji 3.11: Previously, this type was only available after including `<frameobject.h>`.

PyFrameObject *PyFrame_New( PyThreadState *tstate, PyCodeObject *code, PyObject *globals, PyObject *locals)

  Create a new frame object. This function returns a strong reference to the new frame object on success, and returns `NULL` with an exception set on failure.

int PyFrame_Check( PyObject *obj)

  Return non-zero if obj is a frame object.

  Zmienione w wersji 3.11: Previously, this function was only available after including `<frameobject.h>`.

PyFrameObject *PyFrame_GetBack( PyFrameObject *frame)
  Wartość zwracana: nowa referencja.

  Get the frame next outer frame.

  Return a strong reference, or `NULL` if frame has no outer frame. This raises no exceptions.

  Dodane w wersji 3.9.

PyObject *PyFrame_GetBuiltins( PyFrameObject *frame)
  Wartość zwracana: nowa referencja.

  Get the frame’s `f_builtins` attribute.

  Return a strong reference. The result cannot be `NULL`.

  Dodane w wersji 3.11.

PyCodeObject *PyFrame_GetCode( PyFrameObject *frame)
  Wartość zwracana: nowa referencja. Część stabilnego ABI od wersji 3.10.

  Get the frame code.

  Return a strong reference.

  The result (frame code) cannot be `NULL`.

  Dodane w wersji 3.9.

PyObject *PyFrame_GetGenerator( PyFrameObject *frame)
  Wartość zwracana: nowa referencja.

  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 strong reference, or `NULL`.

  Dodane w wersji 3.11.

PyObject *PyFrame_GetGlobals( PyFrameObject *frame)
  Wartość zwracana: nowa referencja.

  Get the frame’s `f_globals` attribute.

  Return a strong reference. The result cannot be `NULL`.

  Dodane w wersji 3.11.

int PyFrame_GetLasti( PyFrameObject *frame)

  Get the frame’s `f_lasti` attribute.

  Returns -1 if `frame.f_lasti` is `None`.

  Dodane w wersji 3.11.

PyObject *PyFrame_GetVar( PyFrameObject *frame, PyObject *name)
  Wartość zwracana: nowa referencja.

  Get the variable name of frame.

  - Return a strong reference to the variable value on success.

  - Raise `NameError` and return `NULL` if the variable does not exist.

  - Raise an exception and return `NULL` on error.

  name type must be a `str`.

  Dodane w wersji 3.12.

PyObject *PyFrame_GetVarString( PyFrameObject *frame, const char *name)
  Wartość zwracana: nowa referencja.

  Similar to `PyFrame_GetVar()`, but the variable name is a C string encoded in UTF-8.

  Dodane w wersji 3.12.

PyObject *PyFrame_GetLocals( PyFrameObject *frame)
  Wartość zwracana: nowa referencja.

  Get the frame’s `f_locals` attribute. If the frame refers to an optimized scope, this returns a write-through proxy object that allows modifying the locals. In all other cases (classes, modules, `exec()`, `eval()`) it returns the mapping representing the frame locals directly (as described for `locals()`).

  Return a strong reference.

  Dodane w wersji 3.11.

  Zmienione w wersji 3.13: As part of PEP 667, return an instance of `PyFrameLocalsProxy_Type`.

int PyFrame_GetLineNumber( PyFrameObject *frame)
  Część stabilnego ABI od wersji 3.10.

  Return the line number that frame is currently executing.

## Frame locals proxies

Dodane w wersji 3.13.

The `f_locals` attribute on a frame object is an instance of a „frame-locals proxy”. The proxy object exposes a write-through view of the underlying locals dictionary for the frame. This ensures that the variables exposed by `f_locals` are always up to date with the live local variables in the frame itself.

See PEP 667 for more information.

PyTypeObject PyFrameLocalsProxy_Type

  The type of frame `locals()` proxy objects.

int PyFrameLocalsProxy_Check( PyObject *obj)

  Return non-zero if obj is a frame `locals()` proxy.

## Legacy local variable APIs

These APIs are soft deprecated. As of Python 3.13, they do nothing. They exist solely for backwards compatibility.

void PyFrame_LocalsToFast( PyFrameObject *f, int clear)

  Prior to Python 3.13, this function would copy the `f_locals` attribute of f to the internal „fast” array of local variables, allowing changes in frame objects to be visible to the interpreter. If clear was true, this function would process variables that were unset in the locals dictionary.

  Soft deprecated since version 3.13: This function now does nothing.

void PyFrame_FastToLocals( PyFrameObject *f)

  Prior to Python 3.13, this function would copy the internal „fast” array of local variables (which is used by the interpreter) to the `f_locals` attribute of f, allowing changes in local variables to be visible to frame objects.

  Soft deprecated since version 3.13: This function now does nothing.

int PyFrame_FastToLocalsWithError( PyFrameObject *f)

  Prior to Python 3.13, this function was similar to `PyFrame_FastToLocals()`, but would return `0` on success, and `-1` with an exception set on failure.

  Soft deprecated since version 3.13: This function now does nothing.

Zobacz także

PEP 667

## Internal frames

Unless using PEP 523, you will not need this.

struct _PyInterpreterFrame

  The interpreter’s internal frame representation.

  Dodane w wersji 3.11.

PyObject *PyUnstable_InterpreterFrame_GetCode(struct _PyInterpreterFrame *frame);
  To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  > Return a strong reference to the code object for the frame.

  Dodane w wersji 3.12.

int PyUnstable_InterpreterFrame_GetLasti(struct _PyInterpreterFrame *frame);
  To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  Return the byte offset into the last executed instruction.

  Dodane w wersji 3.12.

int PyUnstable_InterpreterFrame_GetLine(struct _PyInterpreterFrame *frame);
  To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  Return the currently executing line number, or -1 if there is no line number.

  Dodane w wersji 3.12.

const PyTypeObject *PyUnstable_ExecutableKinds
  To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  An array of executable kinds (executor types) for frames, used for internal debugging and tracing.

  Tools like debuggers and profilers can use this to identify the type of execution context associated with a frame (such as to filter out internal frames). The entries are indexed by the following constants:

  Constant | Description
  --- | ---

  PyUnstable_EXECUTABLE_KIND_SKIP
    To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  The frame is internal (For example: inlined) and should be skipped by tools.

  PyUnstable_EXECUTABLE_KIND_PY_FUNCTION
    To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  The frame corresponds to a standard Python function.

  PyUnstable_EXECUTABLE_KIND_BUILTIN_FUNCTION
    To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  The frame corresponds to a function defined in native code.

  PyUnstable_EXECUTABLE_KIND_METHOD_DESCRIPTOR
    To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  The frame corresponds to a method on a class instance.

  However, Python’s C API lacks a function to read the executable kind from a frame. Instead, use this recipe:

      int
      get_executable_kind(PyFrameObject *frame)
      {
         _PyInterpreterFrame *f = frame->f_frame;
         PyObject *exec = PyStackRef_AsPyObjectBorrow(f->f_executable);

         if (PyCode_Check(exec)) {
            return PyUnstable_EXECUTABLE_KIND_PY_FUNCTION;
         }
         if (PyMethod_Check(exec)) {
            return PyUnstable_EXECUTABLE_KIND_BUILTIN_FUNCTION;
         }
         if (Py_IS_TYPE(exec, &PyMethodDescr_Type)) {
            return PyUnstable_EXECUTABLE_KIND_METHOD_DESCRIPTOR;
         }

         return PyUnstable_EXECUTABLE_KIND_SKIP;
      }

  Dodane w wersji 3.13.

PyUnstable_EXECUTABLE_KINDS
  To jest niestabilne API. Może ulec zmianie bez ostrzeżenia w wydaniach minor.

  The number of entries in `PyUnstable_ExecutableKinds`.

  Dodane w wersji 3.13.