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Re:Show HN: HumbleMatch – Easy type-checking for Python by bendtherules on Monday June 22, 2015 @11:45AM (#9759113)
HumbleMatch is made to add a zing to your mundane type-checking and duck-checking code.

* Check your function arguments reliably, add more flexible signatures and most of all, have a lovely API.

* Or just sprinkle some assert checks to ensure the data is what you expect it to be at any point.