author | martin.trojer@nokia.com |
Fri, 31 Jul 2009 15:01:17 +0100 | |
changeset 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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.. highlightlang:: 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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.. ctype:: PyFunctionObject |
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The C structure used for functions. |
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.. cvar:: PyTypeObject PyFunction_Type |
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.. index:: single: MethodType (in module types) |
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This is an instance of :ctype:`PyTypeObject` and represents the Python function |
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type. It is exposed to Python programmers as ``types.FunctionType``. |
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.. cfunction:: int PyFunction_Check(PyObject *o) |
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Return true if *o* is a function object (has type :cdata:`PyFunction_Type`). |
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The parameter must not be *NULL*. |
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.. cfunction:: 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, name and *__module__* are retrieved from the code |
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object, the argument defaults and closure are set to *NULL*. |
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.. cfunction:: PyObject* PyFunction_GetCode(PyObject *op) |
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Return the code object associated with the function object *op*. |
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.. cfunction:: PyObject* PyFunction_GetGlobals(PyObject *op) |
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Return the globals dictionary associated with the function object *op*. |
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.. cfunction:: 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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.. cfunction:: 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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.. cfunction:: 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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.. cfunction:: 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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.. cfunction:: 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. |