I agree. That's partly why I wrote this: https://github.com/crdoconnor/strictyaml https://github.com/crdoconnor/strictyaml e.g. >>> load(x, Map({"YAML": M

I agree. That's partly why I wrote this: https://github.com/crdoconnor/strictyaml https://github.com/crdoconnor/strictyaml e.g. >>> load(x, Map({"YAML": MapPattern(Str(), Str())})) {'YAML': {'spring,summer,fall,winter': '3,6,9,12', "takes a no for a 'no'": 'no', 'the game is': 'on'}} >>> load(x, Map({"YAML": Map({"spring,summer,fall,winter": Str(), "takes a no for a 'no'": Bool(), "the game is": Bool()})})) {'YAML': {'spring,summer,fall,winter': '3,6,9,12', "takes a no for a 'no'": False, 'the game is': True}}