moved import of optional packages into classes

python_repositories/adapters/minio_adapter.py

@@ -3,10 +3,7 @@
 from __future__ import annotations
 import os
 from io import BytesIO
-
 import structlog
-from minio import Minio, S3Error
-
 from python_utils import check_env
 
 from python_repositories.interfaces import (
@@ -28,6 +25,11 @@ class MinioAdapter(
     chunk_size: int = 5 * 2**20  # 5 MiB
 
     def __init__(self) -> None:
+        # Import here to avoid hard dependency if MinioAdapter is not used
+        try:
+            from minio import Minio, S3Error  # type: ignore[import]
+        except ImportError as e:
+            raise RuntimeError("MinioAdapter dependencies missing") from e
         # Setup logger
         self.logger = structlog.get_logger(
             self.__class__.__name__,