**Vertigo @ MFF** @vertigo · 2018-03-06T21:37:54Z

Vertigo @ MFF @vertigo

Thank you #J #APL. I cannot think of a cleaner way of expressing this logic.

options_specified = [1 for x in [args.username, args.email, args.id] if x]
number_of_options_given = sum(options_specified)
if number_of_options_given > 1:
LOG.error(...)

Mar 06, 2018, 21:37 · Web · 0 · 1

**Jamey Sharp** @jamey@toot.cat · Mar 06, 2018, 21:40

**Jamey Sharp** @jamey@toot.cat · Mar 06, 2018, 21:40

@vertigo is this Python? How do you feel about sum(map(bool, [args.username, …]))?

**Vertigo @ MFF** @vertigo · Mar 07, 2018, 00:24

**Vertigo @ MFF** @vertigo · Mar 07, 2018, 00:24

@jamey Even better yet!! Thanks!

**Jamey Sharp** @jamey@toot.cat · Mar 07, 2018, 00:26

**Jamey Sharp** @jamey@toot.cat · Mar 07, 2018, 00:26

@vertigo It's a _little_ weird that in Python, (True + True == 2), but it sure can be convenient on occasion!