A lot of these need to be updated. For one, they don't follow PEP8. Secondly, unfortunately, the signal thing doesn't work on Windows and the threading thing i

A lot of these need to be updated. For one, they don't follow PEP8. Secondly, unfortunately, the signal thing doesn't work on Windows and the threading thing is a bad example because it simulates multiplication, but if you actually had a CPU intensive task, there would be no performance benefits.