while true: !!!
tdelaney at avaya.com
Mon Dec 18 01:03:31 CET 2000
This is precisely the reason this thread exists ...
The idiom is actually
do something else
Basically, it's for dealing with situations where you can't tell at the
beginning or end of a loop if the loop is completed - only somewhere in the
middle. The canonical example is
try to read a line from a file
if we didn't get a line:
do something with the line
There are many ways of dealing with this, but they all have compromises - in
most cases either duplication of code, or an assumption of memory
+61 2 9352 9079
> -----Original Message-----
> From: D-Man [mailto:dman at res137a-039.rh.rit.edu]
> Sent: Sunday, 17 December 2000 4:33 AM
> To: morpheus at here.not.there
> Cc: python-list at python.org
> Subject: Re: while true: !!!
> On Sat, Dec 16, 2000 at 04:45:07PM +0000, Steve Lamb wrote:
> > while 1:
> > if cond:
> > break
> > do something
> why not
> while ( !cond ) :
> do something
> It involves less typing and more importantly shows the next reader
> when the loop should end. I strongly dislike the fake infinite loops
> like "while 1 :".
> PS. I haven't been following most of this thread, so forgive me if
> this has already come up.
More information about the Python-list