Fix readthedocs build failure (#803)
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5
tianshou/env/utils.py
vendored
5
tianshou/env/utils.py
vendored
@ -4,7 +4,10 @@ import cloudpickle
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import gymnasium
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import numpy as np
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from tianshou.env.pettingzoo_env import PettingZooEnv
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try:
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from tianshou.env.pettingzoo_env import PettingZooEnv
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except ImportError:
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PettingZooEnv = None # type: ignore
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if TYPE_CHECKING:
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import gym
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