>Less than that, in my experience. Certainly a lot less than the amount of tests and documentation you'd need to make up for the absence of types. Certainly mo

>Less than that, in my experience. Certainly a lot less than the amount of tests and documentation you'd need to make up for the absence of types. Certainly more, in my experience. >You need to work with the language. Is a python test cycle faster than a full rebuild? Probably. By an order of magnitude. > Is it faster than the time between making a change and seeing the red underline in one's IDE? It can be that quick, yes. I have a unit test watcher that reruns them every time a file save in the project is detected (using watchdog/epoll), and I get the results back in seconds. That has the added advantage of detecting more than just trivial type errors. It catches logic errors too.