Cleaning up conditionals
__peter__ at web.de
Sat Dec 31 11:24:35 EST 2016
Deborah Swanson wrote:
> Here I have a real mess, in my opinion:
> if len(l1[st]) == 0:
> if len(l2[st]) > 0:
> l1[st] = l2[st]
> elif len(l2[st]) == 0:
> if len(l1[st]) > 0:
> l2[st] = l1[st]
> Anybody know or see an easier (more pythonic) way to do this? I need to
> do it for four fields, and needless to say, that's a really long block
> of ugly code.
By "four fields", do you mean four values of st, or four pairs of l1, l2, or
more elif-s with l3 and l4 -- or something else entirely?
Usually the most obvious way to avoid repetition is to write a function, and
to make the best suggestion a bit more context is necessary.
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