else in list comp

Erik Max Francis max at alcyone.com
Wed Jan 29 11:42:05 CET 2003


Alex Martelli wrote:

> IF (a BIG if) this is such a problem that it's worth adding stuff
> to Python, then clearly the added stuff must be general -- namely,
> a ternary (if not an even wider one-of-N) short-circuiting operator.

I agree.  If you're really wanting an else clause in the context of a
list comprehension, you really should be thinking instead in terms of
wanting a conditional/tenary operator, rather than some special syntax
specific to list comprehensions only.

As you suggest with your emphasis on _if_, whether you do that is really
independent of the value you attach to a conditional operator being
introduced to Python (I myself am in favor of it).

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