Removes last p3.8, fixes errors shown by mypy

Author: sjoerdk

.pre-commit-config.yaml

@@ -30,3 +30,5 @@ repos:
           - pydantic
           - types-requests
           - types-Jinja2
+          - types-pydicom
+

setup.cfg

@@ -1,5 +1,5 @@
 [mypy]
-python_version = 3.8
+python_version = 3.10
 warn_return_any=True
 strict_optional=True
 warn_no_return=True

tests/factories.py

@@ -8,6 +8,7 @@
 from dicomtrolley.core import (
     InstanceReference,
     SeriesReference,
+    Study,
     StudyReference,
 )
 from dicomtrolley.dicom_qr import DICOMQR
@@ -127,15 +128,15 @@ def create_image_level_study(
     study_instance_uid,
     series_instance_uids: List[str],
     sop_class_uids: List[str],
-) -> Dataset:
+) -> Study:
     return DICOMQR.parse_c_find_response(
         create_c_find_image_response(
             study_instance_uid, series_instance_uids, sop_class_uids
         )
     )[0]
 
 
-def quick_image_level_study(uid) -> Dataset:
+def quick_image_level_study(uid) -> Study:
     """Study with 2 series and some Instances in each series"""
     return create_image_level_study(
         uid,