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