Terry J. Reedy <tjre...@udel.edu> added the comment:

If you are suggesting that code like
>>> '\2'
'\x02'
should routinely product a warning, and later an exception, this issue should 
be rejected. Normal code does not produce warnings. Rarity in the stdlib is 
irrelevant. Backslash processing of string literals is part of core syntax. 
Breaking existing code would not be acceptable.

----------
nosy: +tjreedy
versions: +Python 3.2 -Python 2.6, Python 3.1

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<http://bugs.python.org/issue8465>
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