[issue5621] Add description of special case to "Assignment statements" section

[Georg Brandl]

Georg Brandl <georg at python.org> added the comment:

I'm not sure it belongs there, since normal assignments do not say 
*anything* about the RHS.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5621>
_______________________________________