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7. Concrete Objects Layer

The functions in this chapter are specific to certain Python object types. Passing them an object of the wrong type is not a good idea; if you receive an object from a Python program and you are not sure that it has the right type, you must perform a type check first; for example. to check that an object is a dictionary, use PyDict_Check(). The chapter is structured like the ``family tree'' of Python object types.

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ype.

int PyComplex_Check (PyObject *p)
Returns true if its argument is a PyComplexObject.
PyObject* PyComplex_FromCComplex (Py_complex v)
Return value: New reference.
Create a new Python complex number object from a C Py_complex value.
PyObject* PyComplex_FromDoubles (double real, double imag)
Return value: New reference.
Returns a new PyComplexObject object from real and imag.
double PyComplex_RealAsDouble (PyObject *op)
Returns the real part of op as a C double.
double PyComplex_ImagAsDouble (PyObject *op)
Returns the imaginary part of op as a C double.
Py_complex PyComplex_AsCComplex (PyObject *op)
Returns the Py_complex value of the complex number op.

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New reference. Returns a new writable buffer object that maintains its own memory buffer of size bytes. ValueError is returned if size is not zero or positive.

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py*

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