[Tutor] string.unprintable?

[Clay Shirky]

> if printable.search(line):
>  # do it here.
> else:  
>  # or not

Right, though this is different loop logic than the operation calls for.
This is "If a line has any printable characters, do something", but I need
"If a line has any unprintable characters, do something", which means
building a big weird regex.

I had hoped that there would be string.unprintable, or some easy way to
derive it from string.printable, but it looks like the regex is the way to
go.

-c