Python 2.7: if-else statement with different indentation

Asked May 11 '19 at 18:17

Active May 11 '19 at 18:17

Viewed 27 times

I'm doing an online course on Python 2.7 and one thing on if-else statements threw me off a bit:

def is_prime(num):
    for n in range(2,num):
        if num%n == 0:
            print "Not prime"
            break       
    else:
        print "Number is prime"

I know what the function does, but what is confusing me here is why Python understands and accepts the syntax of the if-else part (it wasn't explained in the video I was watching either). I would've expected the else to be at the same level of the if statement. Of course this would mean you'd get "Number is prime" a bunch of times for everything except 3, so it's great that this works as it is, but I'm looking for some sort of rule when I can do this. I tried googling it, but I haven't found this case on the normal tutorial sites.

asked May 11 '19 at 18:17

NoNameNo123

1

That's not actually an if-else. – user2357112 May 11 '19 at 18:19
2

The else has nothung to do with the if. The else is for the 'for' – lalala May 11 '19 at 18:19
@lalala That makes sense, I simply didn't know that `for`could have an `else`. Thank you! – NoNameNo123 May 11 '19 at 18:22
I was shocked as well when I found out previously. – lalala May 11 '19 at 19:44

Python 2.7: if-else statement with different indentation

0 Answers0