Merge pull request #31 from python-accelerator-middle-layer/typing

Fixed so importing from typing_extensions for earlier python versions.

Author: JeanLucPons

pyaml/magnet/magnet.py

@@ -4,7 +4,10 @@
 from ..control import abstract
 from .model import MagnetModel
 from scipy.constants import speed_of_light
-from typing import Self
+try:
+    from typing import Self  # Python 3.11+
+except ImportError:
+    from typing_extensions import Self  # Python 3.10 and earlier
 import numpy as np
 
 class MagnetConfigModel(ElementConfigModel):