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Add missing NotImplementedError for VectorEnv.step #1102

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Jul 4, 2024
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1 change: 1 addition & 0 deletions gymnasium/vector/vector_env.py
Original file line number Diff line number Diff line change
Expand Up @@ -190,6 +190,7 @@ def step(
>>> infos
{}
"""
raise NotImplementedError(f"{self.__str__()} step function is not implemented.")
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This does seem helpful to include

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I'm not sure how the formatter didn't catch this function without a body. Is that normal?

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It is because the docstring counts as a function component


def render(self) -> tuple[RenderFrame, ...] | None:
"""Returns the rendered frames from the parallel environments.
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