Why not implement __bool__ for StreamReponse?

I can currently come up with the:

x = Response(…)
if x:
# never executed here

expected to evaluate expression in if block but never actually evaluated.

example, where bool(x) is always False

I think, you might consider implementing __bool__ particularly for Response class with checking body or status code, or always being True.

This behavour comes from MutableMapping, since it’s “empty” mapping.