Boolean オブジェクト
********************

Booleans in Python are implemented as a subclass of integers.  There
are only two booleans, "Py_False" and "Py_True".  As such, the normal
creation and deletion functions don't apply to booleans.  The
following macros are available, however.

PyTypeObject PyBool_Type
    * 次に属します: Stable ABI.*

   この "PyTypeObject" のインスタンスは Python の boolean 型を表現しま
   す; Python レイヤにおける "bool" と同じオブジェクトです。

int PyBool_Check(PyObject *o)

   *o* が "PyBool_Type" 型の場合に真を返します。この関数は常に成功しま
   す。

PyObject *Py_False

   The Python "False" object.  This object has no methods.  It needs
   to be treated just like any other object with respect to reference
   counts.

PyObject *Py_True

   The Python "True" object.  This object has no methods.  It needs to
   be treated just like any other object with respect to reference
   counts.

Py_RETURN_FALSE

   Return "Py_False" from a function, properly incrementing its
   reference count.

Py_RETURN_TRUE

   Return "Py_True" from a function, properly incrementing its
   reference count.

PyObject *PyBool_FromLong(long v)
    *戻り値: 新しい参照。** 次に属します: Stable ABI.*

   Return a new reference to "Py_True" or "Py_False" depending on the
   truth value of *v*.
