placeholder_from_space only accepts Box and Discrete spaces

[eleninisioti]

Hello!

I just started playing around with the code and I am trying to run a ppo_lagrangian agent for a custom environment. The issue is that my observation space is a dictionary that includes a variety of spaces, in particular 5 Box spaces and a MultiDiscrete space. I have changed run_agent.run_polopt_agent to accept my observation and action space as arguments and now I am getting a NotImplementedError from network.placeholder_from_space.

I was wondering if trying to find a workaround is worth-pursuing or these techniques are only meant to be run on simple Box and Discrete spaces.