On Saturday November 17, 2007, Michael wrote:
> Hi All
>
> This has probably been asked before but can I get some clarification on
> why Python does not have a repeat...until statement, and does that mean
> repeat...until is bad practice? I was trying to get Python on the
> standard langauge list for my state secondary school system but they say
> a langauge must have a test last structure in it to be considered.
That is quite an arbitrary rule for a state to use when adopting a
programming language. In any event, if they are also uncomfortable
with the while(True)/break combination that has been suggested by
others, you can alternatively mimic the repeat/until by using a
well-named boolean variable, as follows.
repeating = True
while repeating:
# ...
if (exitCondition):
repeating = False
or in a negated form (if that reads better), as
done = False
while not done:
# ...
if (exitCondition):
done = True
Perhaps these kinds of examples might help ease their concerns.
With regard,
Michael
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