typing fix

Author: i-jey

ulc_mm_package/QtGUI/study_metadata_form.py

@@ -1,5 +1,5 @@
 from pathlib import Path
-from typing import Dict
+from typing import Dict, List
 
 from PyQt5.QtCore import QDate
 from PyQt5.QtGui import QIntValidator
@@ -94,7 +94,7 @@ def __init__(self, cfg: dict, parent=None):
         self.config_data = cfg
         metadata = self.config_data["metadata"]
         self._widgets = {}
-        self._required_widgets: list[QWidget] = []
+        self._required_widgets: List[QWidget] = []
         layout = QFormLayout(self)
 
         # Confirmation buttons