If you have a tagged union type with Boolean literals as the tags, like in the slack api, then you can’t say ‘if not res.ok’ to narrow the type, you have to say

If you have a tagged union type with Boolean literals as the tags, like in the slack api, then you can’t say ‘if not res.ok’ to narrow the type, you have to say ‘if res.ok == True’ Which isn’t very pythonic imho Also I’m pretty sure ‘if res.ok is True’ doesn’t work