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109 lines
3.3 KiB
109 lines
3.3 KiB
4 months ago
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.. highlight:: c
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.. _function-objects:
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Function Objects
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----------------
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.. index:: object: function
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There are a few functions specific to Python functions.
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.. c:type:: PyFunctionObject
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The C structure used for functions.
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.. c:var:: PyTypeObject PyFunction_Type
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.. index:: single: MethodType (in module types)
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This is an instance of :c:type:`PyTypeObject` and represents the Python function
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type. It is exposed to Python programmers as ``types.FunctionType``.
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.. c:function:: int PyFunction_Check(PyObject *o)
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Return true if *o* is a function object (has type :c:data:`PyFunction_Type`).
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The parameter must not be ``NULL``.
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.. c:function:: PyObject* PyFunction_New(PyObject *code, PyObject *globals)
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Return a new function object associated with the code object *code*. *globals*
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must be a dictionary with the global variables accessible to the function.
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The function's docstring and name are retrieved from the code object. *__module__*
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is retrieved from *globals*. The argument defaults, annotations and closure are
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set to ``NULL``. *__qualname__* is set to the same value as the function's name.
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.. c:function:: PyObject* PyFunction_NewWithQualName(PyObject *code, PyObject *globals, PyObject *qualname)
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As :c:func:`PyFunction_New`, but also allows setting the function object's
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``__qualname__`` attribute. *qualname* should be a unicode object or ``NULL``;
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if ``NULL``, the ``__qualname__`` attribute is set to the same value as its
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``__name__`` attribute.
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.. versionadded:: 3.3
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.. c:function:: PyObject* PyFunction_GetCode(PyObject *op)
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Return the code object associated with the function object *op*.
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.. c:function:: PyObject* PyFunction_GetGlobals(PyObject *op)
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Return the globals dictionary associated with the function object *op*.
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.. c:function:: PyObject* PyFunction_GetModule(PyObject *op)
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Return the *__module__* attribute of the function object *op*. This is normally
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a string containing the module name, but can be set to any other object by
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Python code.
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.. c:function:: PyObject* PyFunction_GetDefaults(PyObject *op)
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Return the argument default values of the function object *op*. This can be a
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tuple of arguments or ``NULL``.
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.. c:function:: int PyFunction_SetDefaults(PyObject *op, PyObject *defaults)
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Set the argument default values for the function object *op*. *defaults* must be
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``Py_None`` or a tuple.
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Raises :exc:`SystemError` and returns ``-1`` on failure.
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.. c:function:: PyObject* PyFunction_GetClosure(PyObject *op)
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Return the closure associated with the function object *op*. This can be ``NULL``
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or a tuple of cell objects.
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.. c:function:: int PyFunction_SetClosure(PyObject *op, PyObject *closure)
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Set the closure associated with the function object *op*. *closure* must be
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``Py_None`` or a tuple of cell objects.
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Raises :exc:`SystemError` and returns ``-1`` on failure.
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.. c:function:: PyObject *PyFunction_GetAnnotations(PyObject *op)
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Return the annotations of the function object *op*. This can be a
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mutable dictionary or ``NULL``.
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.. c:function:: int PyFunction_SetAnnotations(PyObject *op, PyObject *annotations)
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Set the annotations for the function object *op*. *annotations*
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must be a dictionary or ``Py_None``.
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Raises :exc:`SystemError` and returns ``-1`` on failure.
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