chore: import upstream snapshot with attribution

tests/python/shared/tasks/base.py

@@ -0,0 +1,36 @@
+# Copyright (C) CVAT.ai Corporation
+#
+# SPDX-License-Identifier: MIT
+
+from typing import Any
+
+import attrs
+from cvat_sdk.api_client import models
+
+from shared.tasks.interface import ITaskSpec
+from shared.tasks.utils import parse_frame_step
+
+
+@attrs.define
+class TaskSpecBase(ITaskSpec):
+    _params: dict | models.TaskWriteRequest
+    _data_params: dict | models.DataRequest
+    size: int = attrs.field(kw_only=True)
+
+    @property
+    def frame_step(self) -> int:
+        return parse_frame_step(getattr(self, "frame_filter", ""))
+
+    def __getattr__(self, k: str) -> Any:
+        notfound = object()
+
+        for params in [self._params, self._data_params]:
+            if isinstance(params, dict):
+                v = params.get(k, notfound)
+            else:
+                v = getattr(params, k, notfound)
+
+            if v is not notfound:
+                return v
+
+        raise AttributeError(k)