first commit

mdrsclient/commands/base.py

@@ -0,0 +1,11 @@
+from abc import ABC, abstractmethod
+from argparse import _SubParsersAction
+
+from mdrsclient.exceptions import UnexpectedException
+
+
+class BaseCommand(ABC):
+    @staticmethod
+    @abstractmethod
+    def register(top_level_subparsers: _SubParsersAction) -> None:
+        raise UnexpectedException("Not implemented.")