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annotate Doc/c-api/function.rst @ 64166:d0e9febfa00a 3.1

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Merged revisions 84172 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ........ r84172 | martin.v.loewis | 2010-08-18 18:12:23 +0200 (Mi, 18 Aug 2010) | 2 lines Restore GIL in nis_cat in case of error. ........
author Martin v. Löwis <martin@v.loewis.de>
date Thu, 19 Aug 2010 09:03:03 +0000
parents afdd64edf189
children 521eac31a893
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1 .. highlightlang:: c
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2
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3 .. _function-objects:
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4
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5 Function Objects
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6 ----------------
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7
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8 .. index:: object: function
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9
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10 There are a few functions specific to Python functions.
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13 .. ctype:: PyFunctionObject
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14
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15 The C structure used for functions.
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18 .. cvar:: PyTypeObject PyFunction_Type
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20 .. index:: single: MethodType (in module types)
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21
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22 This is an instance of :ctype:`PyTypeObject` and represents the Python function
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23 type. It is exposed to Python programmers as ``types.FunctionType``.
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26 .. cfunction:: int PyFunction_Check(PyObject *o)
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27
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28 Return true if *o* is a function object (has type :cdata:`PyFunction_Type`).
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29 The parameter must not be *NULL*.
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32 .. cfunction:: PyObject* PyFunction_New(PyObject *code, PyObject *globals)
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33
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34 Return a new function object associated with the code object *code*. *globals*
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35 must be a dictionary with the global variables accessible to the function.
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36
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37 The function's docstring, name and *__module__* are retrieved from the code
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38 object, the argument defaults and closure are set to *NULL*.
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41 .. cfunction:: PyObject* PyFunction_GetCode(PyObject *op)
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42
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43 Return the code object associated with the function object *op*.
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46 .. cfunction:: PyObject* PyFunction_GetGlobals(PyObject *op)
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47
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48 Return the globals dictionary associated with the function object *op*.
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51 .. cfunction:: PyObject* PyFunction_GetModule(PyObject *op)
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53 Return the *__module__* attribute of the function object *op*. This is normally
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54 a string containing the module name, but can be set to any other object by
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55 Python code.
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58 .. cfunction:: PyObject* PyFunction_GetDefaults(PyObject *op)
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60 Return the argument default values of the function object *op*. This can be a
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61 tuple of arguments or *NULL*.
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64 .. cfunction:: int PyFunction_SetDefaults(PyObject *op, PyObject *defaults)
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65
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66 Set the argument default values for the function object *op*. *defaults* must be
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67 *Py_None* or a tuple.
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69 Raises :exc:`SystemError` and returns ``-1`` on failure.
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72 .. cfunction:: PyObject* PyFunction_GetClosure(PyObject *op)
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74 Return the closure associated with the function object *op*. This can be *NULL*
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75 or a tuple of cell objects.
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78 .. cfunction:: int PyFunction_SetClosure(PyObject *op, PyObject *closure)
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79
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80 Set the closure associated with the function object *op*. *closure* must be
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81 *Py_None* or a tuple of cell objects.
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83 Raises :exc:`SystemError` and returns ``-1`` on failure.
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86 .. cfunction:: PyObject *PyFunction_GetAnnotations(PyObject *op)
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87
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88 Return the annotations of the function object *op*. This can be a
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89 mutable dictionary or *NULL*.
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92 .. cfunction:: int PyFunction_SetAnnotations(PyObject *op, PyObject *annotations)
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94 Set the annotations for the function object *op*. *annotations*
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95 must be a dictionary or *Py_None*.
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97 Raises :exc:`SystemError` and returns ``-1`` on failure.