A bug in TfEnv

[windweller]

I'm creating my own custom environment:

class MyEnv(Env):
   def __init__(self):
      super(MyEnv, self).__init__()

   @property
    def vectorized(self):
        return True

    def candy(self):
        return "there's a candy!"

env = TfEnv(normalize(MyEnv()))
print(getattr(env, 'vectorized', False))
print(env.wrapped_env.candy())

The result is weirdly False.

I really couldn't figure out why even by reading normalize() TfEnv() and ProxyEnv()'s source code. It seems like I should be able to have access to the underlying wrapped class, so I added a candy() method and call it, but it would tell me that "NormalizedEnv" object has no attribute candy.

This is weird because the first line of NormalizedEnv is:

class NormalizedEnv(ProxyEnv, Serializable):
    def __init__(
            self,
            env):
        ProxyEnv.__init__(self, env)

and for ProxyEnv it's:

class ProxyEnv(Env):
    def __init__(self, wrapped_env):
        self._wrapped_env = wrapped_env

    @property
    def wrapped_env(self):
        return self._wrapped_env

Why is this happening?