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Hello i am a bit confused; I am trying to write this logic in one liner but i can't get it right

if a < 0:
  a -= 1
else:
  a += 1

one liner:

a -= 1 if a <0 else a += 1
Mayank Porwal
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Ioan Kats
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  • Does this answer your question? https://stackoverflow.com/questions/2802726/putting-a-simple-if-then-else-statement-on-one-line – Karl Olufsen Apr 30 '20 at 21:15

2 Answers2

2

The one line would look like this a -= 1 if a < 0 else -1 or a = a - 1 if a < 0 else a + 1 depending on your preference. This is because the a -= part is not changed by the if

Linus Gudmundsson
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2

Can do it using ternary operators:

a -= 1 if a < 0 else -1

However, ternary expressions are not very readable. Mostly useful with list comprehensions. Otherwise, they just complicate things.

Mayank Porwal
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