cython

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