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#!/usr/bin/env python2.7
# -*- coding: utf-8 -*-
"""
Built-in Constants
==================
A small number of constants live in the built-in namespace. They are:
"""
"""
The sole value of :attr:`types.NoneType`. ``None`` is frequently used to
represent the absence of a value, as when default arguments are not passed to a
function.
"""
NotImplemented = None
"""
Special value used in conjunction with extended slicing syntax.
"""
Ellipsis = None
"""
This constant is true if Python was not started with an :option:`-O` option.
See also the :keyword:`assert` statement.
"""
quitcode = None
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