[misc] update format (#7277)

tests/check_license.py

@@ -0,0 +1,38 @@
+# Copyright 2025 the LlamaFactory team.
+#
+# 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.
+
+import sys
+from pathlib import Path
+
+
+KEYWORDS = ("Copyright", "2025", "LlamaFactory")
+
+
+def main():
+    path_list = []
+    for check_dir in sys.argv[1:]:
+        path_list.extend(Path(check_dir).glob("**/*.py"))
+
+    for path in path_list:
+        with open(path.absolute(), encoding="utf-8") as f:
+            file_content = f.read().strip().split("\n")
+            if not file_content[0]:
+                continue
+
+            print(f"Check license: {path}")
+            assert all(keyword in file_content[0] for keyword in KEYWORDS), f"File {path} does not contain license."
+
+
+if __name__ == "__main__":
+    main()