I think that depends on library. The ones I use seem to use appear to not do that. In fact I think I actually have seen that more in Go. What goes for Go though

I think that depends on library. The ones I use seem to use appear to not do that. In fact I think I actually have seen that more in Go. What goes for Go though is that you won't compile your code until you fix it. In Python you could use mypy, but unfortunately is optional and will work only if you and library author uses annotations.