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Check If max_episode_length is None is NPO #2193

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Check If max_episode_length is None is NPO #2193

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b2ebb26
added check for max_episode_length
ManavR123 Dec 4, 2020
b6808d5
added test
ManavR123 Dec 4, 2020
396f3d6
moved if statement and changed double quotes to single quotes
ManavR123 Dec 5, 2020
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2 changes: 2 additions & 0 deletions src/garage/tf/algos/npo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,8 @@ def __init__(self,
self.policy = policy
self._scope = scope
self.max_episode_length = env_spec.max_episode_length
if self.max_episode_length == None:
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please place this validation above the long list of property initializations (i.e. first lines of this method), and put a newline after the if statement

raise ValueError("max_episode_length must not be None")
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we use single quotes in this repo. we have an automated tool called pre-commit which will check your PR for small issues like this and tell you how to fix them (or you can check the CI results below, which will also tell you what to fix).

See the guide here: https://garage.readthedocs.io/en/latest/user/preparing_a_pr.html and https://garage.readthedocs.io/en/latest/user/git_workflow.html#passing-the-pre-commit-hooks

self._env_spec = env_spec
self._baseline = baseline
self._discount = discount
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16 changes: 16 additions & 0 deletions tests/garage/tf/algos/test_npo.py
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Expand Up @@ -115,6 +115,22 @@ def test_npo_with_invalid_no_entropy_configuration(self):
entropy_method='no_entropy',
policy_ent_coeff=0.02,
)

@pytest.mark.mujoco
def test_npo_with_invalid_max_episode_length(self):
"""Test NPO with invalid max_episode_length."""
with pytest.raises(ValueError):
env = normalize(
GymEnv('InvertedDoublePendulum-v2', max_episode_length=None))
NPO(
env_spec=env.spec,
policy=self.policy,
baseline=self.baseline,
sampler=self.sampler,
discount=0.99,
gae_lambda=0.98,
policy_ent_coeff=0.0
)

def teardown_method(self):
self.env.close()
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