On 09/02/2013 10:45 AM, Antoon Pardon wrote:
Op 02-09-13 10:05, Steven D'Aprano schreef:
It doesn't keep a whole chain of
if clauses together. It doesn't let you do anything that you haven't
already done. It just saves an indent and a newline. The cost, on the
other hand, includes the risk that people will try to do this:
for item in seq: if cond:
do_this()
do_that()
else:
do_something else()
which is clearly nonsense. Worse is this:
for item in seq: if cond:
do_this()
do_that()
else:
do_something else()
which is still nonsense but won't raise SyntaxError.
Why shouldn't this raise a SyntaxError?
Because it would be parsed as a valid for .. else construct. Either that
or become ambiguous to the programmer, who would not be sure whether he
was writing an else clause for the `if`, or for the `for`.
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