cdef extern from "Python.h":
ctypedef void PyObject
############################################################################
# 7.5.2 Instance Objects
############################################################################
# PyTypeObject PyInstance_Type
# Type object for class instances.
# int PyInstance_Check(PyObject *obj)
# Return true if obj is an instance.
object PyInstance_New(PyObject* cls, object arg, object kw)
# Return value: New reference.
# Create a new instance of a specific class. The parameters arg
# and kw are used as the positional and keyword parameters to the
# object's constructor.
object PyInstance_NewRaw(object cls, object dict)
# Return value: New reference.
# Create a new instance of a specific class without calling its
# constructor. class is the class of new object. The dict
# parameter will be used as the object's __dict__; if NULL, a new
# dictionary will be created for the instance.
