The online reference manual misencodes the << and >> binary 
shift operators as the left and right guillemet (French quote) 
characters: « and ».

For instance here:
http://docs.python.org/ref/shifting.html
http://docs.python.org/ref/augassign.html
etc

These look a bit odd onscreen, and will naturally fail should 
someone try cut and paste. Even if you set the file encoding, 
Python will *not* accept the expression x « 2 as suggested by the 
documentation. :)

Release 2.3.4, documentation updated on May 20, 2004.

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user_id=3066

Fixed by adding empty groups to the LaTeX source.  Hackish,
but it works.

Doc/lib/libstdtypes.tex  1.169, 1.129.8.12
Doc/ref/ref5.tex  1.86, 1.76.10.5
Doc/ref/ref6.tex  1.73, 1.68.8.3
Doc/whatsnew/whatsnew20.tex  1.52, 1.48.8.2
Doc/whatsnew/whatsnew23.tex  1.166, 1.159.4.4