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lerobot/examples/lekiwi/rollout.py
2026-04-20 00:45:10 +02:00

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2.8 KiB
Python

# !/usr/bin/env python
# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Run a trained policy on LeKiwi without recording (base rollout).
Uses the rollout engine's :class:`BaseStrategy` (autonomous execution,
no dataset) with :class:`SyncInferenceConfig` (inline policy call per
control tick). For a CLI entry point with the same capabilities plus
recording, upload, and human-in-the-loop variants, see ``lerobot-rollout``.
"""
from lerobot.configs import PreTrainedConfig
from lerobot.robots.lekiwi import LeKiwiClientConfig
from lerobot.rollout import BaseStrategyConfig, RolloutConfig, build_rollout_context
from lerobot.rollout.inference import SyncInferenceConfig
from lerobot.rollout.strategies import BaseStrategy
from lerobot.utils.process import ProcessSignalHandler
from lerobot.utils.utils import init_logging
FPS = 30
DURATION_SEC = 60
TASK_DESCRIPTION = "My task description"
HF_MODEL_ID = "<hf_username>/<model_repo_id>"
def main():
init_logging()
# Robot: LeKiwi client — make sure lekiwi_host is already running on the robot.
robot_config = LeKiwiClientConfig(remote_ip="172.18.134.136", id="lekiwi")
# Policy: load the pretrained config. ``pretrained_path`` is read downstream
# by ``build_rollout_context`` to reload the full model.
policy_config = PreTrainedConfig.from_pretrained(HF_MODEL_ID)
policy_config.pretrained_path = HF_MODEL_ID
# Assemble the rollout config: base strategy (no recording) + sync inference.
cfg = RolloutConfig(
robot=robot_config,
policy=policy_config,
strategy=BaseStrategyConfig(),
inference=SyncInferenceConfig(),
fps=FPS,
duration=DURATION_SEC,
task=TASK_DESCRIPTION,
)
# Graceful Ctrl-C: the strategy loop exits when shutdown_event is set.
signal_handler = ProcessSignalHandler(use_threads=True)
# Build the context (connects robot, loads policy, wires the inference strategy).
# No custom processors here — LeKiwi runs on raw joint features.
ctx = build_rollout_context(cfg, signal_handler.shutdown_event)
strategy = BaseStrategy(cfg.strategy)
try:
strategy.setup(ctx)
strategy.run(ctx)
finally:
strategy.teardown(ctx)
if __name__ == "__main__":
main()