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7.1.1 Type Objects

`PyTypeObject`
  The C structure of the objects used to describe built-in types.

PyObject* `PyType_Type`
  This is the type object for type objects; it is the same object as `types.TypeType` in the Python layer.

int `PyType_Check`(PyObject *o)
  Returns true is the object o is a type object.

int `PyType_HasFeature`(PyObject *o, int feature)
  Returns true if the type object o sets the feature feature. Type features are denoted by single bit flags.