I find that when I run into a similar scenario the reason why I need the
iterable to be non-empty is because I'm trying to find something in it, and for
this the `else` clause works pretty well:
for item in get_items():
if check(item):
do_thing(item)
break
else:
raise ValueError()
Early returns can also be useful:
for item in get_items():
if check(item):
return do_thing(item)
raise ValueError()
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