else condition in list comprehension
Luis M. Gonzalez
luismgz at gmail.com
Mon Jan 10 10:49:53 EST 2005
It's me wrote:
> > z = [i + (2, -2)[i % 2] for i in range(10)]
> But then why would you want to use such feature? Wouldn't that make
> code much harder to understand then simply:
> for i in range(10):
> if i%2:
> Or are we trying to write a book on "Puzzles in Python"?
Once you get used to list comprehensions (and it doesn't take long),
they are a more concise and compact way to express these operations.
I think that writing 6 lines instead of 1 could be more readable of you
are a beginner, but after playing a little bit with listcomps for the
first time, you'll see they are very practical yet readable.
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