On 2010-04-04 14:50:54 -0700, Paul Rubin said:
Alain Ketterlin <al...@dpt-info.u-strasbg.fr> writes:
d[r] = [r for r in [4,5,6]]
THe problem is that the "r" in d[r] somehow captures the value of the
"r" in the list comprehension, and somehow kills the loop interator.
Yes, this is a well known design error in Python 2.x. The 3.x series
fixes this error but introduces other errors of its own. It is evil
enough that I almost always use this syntax instead:
d[r] = list(r for r in [4,5,6])
that works in 3.x and the later releases of 2.x. In early 2.x (maybe up
to 2.2) it throws an error at compile time rather than at run time.
I have a dramatic suggestion.
Why not use this syntax:
d[r] = [something_else for something_else in [4,5,6]]
Where something_else is basically any conceivable name in the whole
wide world which does not have meaning in the current local scope.
Just for clarity's sake, not sharing names is swell.
--
--S
... p.s: change the ".invalid" to ".com" in email address to reply privately.
--
http://mail.python.org/mailman/listinfo/python-list
