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r""" 

Index of Channels: the information theoretic notion of transmission 

 

The ``channels`` object may be used to access the codes that Sage can build. 

 

- :class:`channel_constructions.ErrorErasureChannel <sage.coding.channel_constructions.ErrorErasureChannel>` 

- :class:`channel_constructions.QarySymmetricChannel <sage.coding.channel_constructions.QarySymmetricChannel>` 

- :class:`channel_constructions.StaticErrorRateChannel <sage.coding.channel_constructions.StaticErrorRateChannel>` 

 

.. NOTE:: 

 

To import these names into the global namespace, use: 

 

sage: from sage.coding.channels_catalog import * 

 

""" 

#***************************************************************************** 

# Copyright (C) 2015 David Lucas <david.lucas@inria.fr> 

# 

# Distributed under the terms of the GNU General Public License (GPL), 

# version 2 or later (at your preference). 

# 

# http://www.gnu.org/licenses/ 

#***************************************************************************** 

from __future__ import absolute_import 

 

from sage.misc.lazy_import import lazy_import as _lazy_import 

_lazy_import('sage.coding.channel_constructions', ['ErrorErasureChannel', 

'QarySymmetricChannel', 

'StaticErrorRateChannel']) 

# We don't want this to appear in tab completion 

del absolute_import