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The for/Else Statement in Python

http://theautomatic.net/2020/07/09/the-for-else-statement-in-python/

by atreadw • 6 years ago

8 7 6 years ago

TH

theautomatic.net

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7

bzb3• 6 years ago

Surprising. I didn't know this construct and I would naturally assume that the else part would execute if the loop never spun (because the list/etc was empty)

neverartful2• 6 years ago

This was my guess too.

amitutk• 6 years ago

Yes, the else keyword is not intuitive. The best way to remember for/else is for/nobreak

neverartful2• 6 years ago

Right! nobreak would make it much clearer.

Doxin• 6 years ago

Relatedly there's also a try/else, where the else block only runs if there wasn't an exception.

All these else variants come in handy from time to time.

rosstex• 6 years ago

The most common use case of for/else for me is:

for/len==0

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