增加了版本号系统

web/backend/version.py

@@ -0,0 +1,23 @@
+"""应用版本信息。"""
+
+from functools import lru_cache
+from importlib.metadata import PackageNotFoundError, version as package_version
+from pathlib import Path
+import tomllib
+
+
+@lru_cache(maxsize=1)
+def get_app_version() -> str:
+    """从 pyproject.toml 读取应用版本，读取失败时回退到包元数据。"""
+    pyproject_path = Path(__file__).resolve().parents[2] / "pyproject.toml"
+    if pyproject_path.exists():
+        with pyproject_path.open("rb") as file:
+            pyproject = tomllib.load(file)
+        version = pyproject.get("project", {}).get("version")
+        if isinstance(version, str) and version:
+            return version
+
+    try:
+        return package_version("douyu-login-py")
+    except PackageNotFoundError:
+        return "0.0.0"