On Nov 15, 2010, at 1:39 AM, Dmitry Groshev wrote:
> if x in range(a, b): #wrong!
> it feels so natural to check it that way, but we have to write
> if a <= x <= b
> I understand that it's not a big deal, but it would be awesome to have
> some optimisations - it's clearly possible to detect things like that
> "wrong" one and fix it in a bytecode.
I don't think anyone has pointed this out, but these are *not* the same thing.
observe:
x=3
if x in range(1,10):
print "yay!"
if 1<=x<10:
print "yay too!"
x=3.2
if x in range(1,10):
print "yay!"
if 1<=x<10:
print "yay too!"
output:
yay!
yay too!
yay too!
bb
--
Brian Blais
bbl...@bryant.edu
http://web.bryant.edu/~bblais
http://bblais.blogspot.com/
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