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.. highlightlang:: c .. _moduleobjects: Module Objects -------------- .. index:: object: module There are only a few functions special to module objects. .. c:var:: PyTypeObject PyModule_Type .. index:: single: ModuleType (in module types) This instance of :c:type:`PyTypeObject` represents the Python module type. This is exposed to Python programs as ``types.ModuleType``. .. c:function:: int PyModule_Check(PyObject *p) Return true if *p* is a module object, or a subtype of a module object. .. versionchanged:: 2.2 Allowed subtypes to be accepted. .. c:function:: int PyModule_CheckExact(PyObject *p) Return true if *p* is a module object, but not a subtype of :c:data:`PyModule_Type`. .. versionadded:: 2.2 .. c:function:: PyObject* PyModule_New(const char *name) .. index:: single: __name__ (module attribute) single: __doc__ (module attribute) single: __file__ (module attribute) Return a new module object with the :attr:`__name__` attribute set to *name*. Only the module's :attr:`__doc__` and :attr:`__name__` attributes are filled in; the caller is responsible for providing a :attr:`__file__` attribute. .. c:function:: PyObject* PyModule_GetDict(PyObject *module) .. index:: single: __dict__ (module attribute) Return the dictionary object that implements *module*'s namespace; this object is the same as the :attr:`__dict__` attribute of the module object. This function never fails. It is recommended extensions use other :c:func:`PyModule_\*` and :c:func:`PyObject_\*` functions rather than directly manipulate a module's :attr:`__dict__`. .. c:function:: char* PyModule_GetName(PyObject *module) .. index:: single: __name__ (module attribute) single: SystemError (built-in exception) Return *module*'s :attr:`__name__` value. If the module does not provide one, or if it is not a string, :exc:`SystemError` is raised and *NULL* is returned. .. c:function:: char* PyModule_GetFilename(PyObject *module) .. index:: single: __file__ (module attribute) single: SystemError (built-in exception) Return the name of the file from which *module* was loaded using *module*'s :attr:`__file__` attribute. If this is not defined, or if it is not a string, raise :exc:`SystemError` and return *NULL*. .. c:function:: int PyModule_AddObject(PyObject *module, const char *name, PyObject *value) Add an object to *module* as *name*. This is a convenience function which can be used from the module's initialization function. This steals a reference to *value*. Return ``-1`` on error, ``0`` on success. .. versionadded:: 2.0 .. c:function:: int PyModule_AddIntConstant(PyObject *module, const char *name, long value) Add an integer constant to *module* as *name*. This convenience function can be used from the module's initialization function. Return ``-1`` on error, ``0`` on success. .. versionadded:: 2.0 .. c:function:: int PyModule_AddStringConstant(PyObject *module, const char *name, const char *value) Add a string constant to *module* as *name*. This convenience function can be used from the module's initialization function. The string *value* must be null-terminated. Return ``-1`` on error, ``0`` on success. .. versionadded:: 2.0 .. c:function:: int PyModule_AddIntMacro(PyObject *module, macro) Add an int constant to *module*. The name and the value are taken from *macro*. For example ``PyModule_AddIntMacro(module, AF_INET)`` adds the int constant *AF_INET* with the value of *AF_INET* to *module*. Return ``-1`` on error, ``0`` on success. .. versionadded:: 2.6 .. c:function:: int PyModule_AddStringMacro(PyObject *module, macro) Add a string constant to *module*. .. versionadded:: 2.6