flake8 fix

2019-01-24 14:33:50 -08:00
parent bb05b9ee88
commit 547764efc9
1 changed files with 0 additions and 1 deletions
--- a/baselines/common/vec_env/subproc_vec_env.py
+++ b/baselines/common/vec_env/subproc_vec_env.py
@@ -111,7 +111,6 @@ def _flatten_obs(obs):
    assert len(obs) > 0

    if isinstance(obs[0], dict):
-        import collections
        keys = obs[0].keys()
        return {k: np.stack([o[k] for o in obs]) for k in keys}
    else: