Package folder structure (#1417)

* Move files

* Replace imports & paths

* Update relative paths

* Update doc symlinks

* Update instructions paths

* Fix imports

* Update grpc files

* Update more instructions

* Downgrade grpc-tools

* Update manifest

* Update more paths

* Update config paths

* Update CI paths

* Update bandit exclusions

* Remove walkthrough section

src/lerobot/utils/queue.py

@@ -0,0 +1,39 @@
+#!/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.
+
+from queue import Empty
+from typing import Any
+
+from torch.multiprocessing import Queue
+
+
+def get_last_item_from_queue(queue: Queue, block=True, timeout: float = 0.1) -> Any:
+    if block:
+        try:
+            item = queue.get(timeout=timeout)
+        except Empty:
+            return None
+    else:
+        item = None
+
+    # Drain queue and keep only the most recent parameters
+    try:
+        while True:
+            item = queue.get_nowait()
+    except Empty:
+        pass
+
+    return item