Terry J. Reedy added the comment:
Based on recent python-list posts, there is also 'break is bad' propaganda
going around. Perhaps we should say that loop-and-a-half with break is
preferred (or at least equally acceptable) to repeating code.
while True:
value = getvalue()
if not value:
break
process(value)
versus
value = getvalue()
while value
process(value)
value = getvalue()
The latter has the problem that the getvalue code can get out of synch, and
indeed, given the alternative of writing it once, it is not obvious that it
should be the same in the two places.
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<http://bugs.python.org/issue18472>
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