boolean result of loop

[Skaperen]

i am looking for something specific to "any iterator" and "any logic test", hopefully that can done on one line.  files and raising an exception was just a believed-to-be-classic example, not what i am actually looking for.  i was hoping for something like how enumerate() gets used and/or how comprehensions get used, etc,

Moderator Kebap: Removed fullquote