@sgillies Doing semi-proper mypy workflow for a personal project has really helped convince me that (1) it is a very useful tool to have around and (2) the idea that all python code ought to implement it in order to be considered complete, mature, correct, or whatever is unhinged and very unpythonic.
@vruba @sgillies It has been a major asset in my dayjob code, surfacing all kinds of weird potential bugs wherever we turn it on