Use dictionary comprehension instead

Author: tieneupin

src/murfey/server/api/session_shared.py

@@ -166,10 +166,13 @@ def find_upstream_visits(session_id: int, db: SQLModelSession):
         upstream_data_dir,
     ) in machine_config.upstream_data_directories.items():
         # Looks for visit name in file path
-        current_upstream_visits = {}
-        for visit_path in Path(upstream_data_dir).glob(f"{visit_name.split('-')[0]}-*"):
-            if visit_path.is_dir():
-                current_upstream_visits[visit_path.name] = visit_path
+        current_upstream_visits = {
+            visit_path.name: visit_path
+            for visit_path in Path(upstream_data_dir).glob(
+                f"{visit_name.split('-')[0]}-*"
+            )
+            if visit_path.is_dir()
+        }
         upstream_visits[upstream_instrument] = current_upstream_visits
     return upstream_visits