continue loop without iteration...
aleaxit at yahoo.com
Fri Jun 1 13:41:45 CEST 2001
"Roman Suzi" <rnd at onego.ru> wrote in message
news:mailman.991393202.7327.python-list at python.org...
> x = y = 1
> while x <= y:
> if something:
> is much clearer, IMHO.
> > therefore, if the if statement is always true, it should never end,
> > but as soon as it's false, dosomething will happen and it will stop.
If I gather the specs correctly, x and y are purely artificial
variables? "As soon as it's false, dosomething will happen and
it will stop" doesn't suggest any role for x and y. The above
code makes it rather unclear that this is the semantics, although
it probably does respect the specs. Why not have the code be
a clear and explicit restating of the specs:
This says: "if the something() condition is always true, the loop
will never end, but as soon as it's false, the loop exits and
dosomething() is called". Pretty much a restatement of the
specs, exactly as it should be. One might stylistically prefer:
which is semantically equivalent and minutely more concise, but
that depends on how one views the else: clause on loop statements.
If 'x', the number of times the loop is executed, does have a role
to play although not mentioned in the natural-language specs, it's
easily added, of course:
x = 1
x += 1
The y variable does seem completely artificial. Artificial variables
introduced to "fake out" control structures are one of my pet peeves,
as I think they detract substantially from code clarity and code
simplicity -- and therefore readability and ease of maintenance.
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