feat ipo

py-client/libs/lockfile.py

@@ -0,0 +1,18 @@
+"""简单的文件锁标记工具。"""
+
+from __future__ import annotations
+
+from os import PathLike
+from pathlib import Path
+
+
+def is_lock(file_path: str | PathLike[str]) -> bool:
+    """判断指定的锁文件是否存在。"""
+    return Path(file_path).is_file()
+
+
+def write_lockfile(file_path: str | PathLike[str]) -> None:
+    """创建锁文件；父目录不存在时自动创建。"""
+    path = Path(file_path)
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text("LOCK", encoding="utf-8")