Update components/clp-py-utils/clp_py_utils/s3_utils.py

Co-authored-by: haiqi96 <14502009+haiqi96@users.noreply.github.com>

Author: Eden-D-Zhang

components/clp-py-utils/clp_py_utils/s3_utils.py

@@ -221,6 +221,8 @@ def parse_s3_url(s3_url: str) -> Tuple[str, str, str]:
         raise ValueError(f"Unsupported URL format: {s3_url}")
 
     region_code = match.group("region_code")
+    if region_code is None:
+        region_code = 'us-east-1'
     bucket_name = match.group("bucket_name")
     endpoint = match.group("endpoint")
     key_prefix = match.group("key_prefix")