Changed set_renewal_count() for returning int

src/folio_migration_tools/transaction_migration/legacy_loan.py

@@ -91,8 +91,7 @@ def __init__(
         self.out_date: datetime = temp_date_out
         self.correct_for_1_day_loans()
         self.make_utc()
-        self.renewal_count = 0
-        self.set_renewal_count(legacy_loan_dict)
+        self.renewal_count = self.set_renewal_count(legacy_loan_dict)
         self.next_item_status = legacy_loan_dict.get("next_item_status", "").strip()
         if self.next_item_status not in legal_statuses:
             self.errors.append(("Not an allowed status", self.next_item_status))
@@ -102,16 +101,17 @@ def __init__(
             else fallback_service_point_id
         )
 
-    def set_renewal_count(self, loan: dict):
+    def set_renewal_count(self, loan: dict) -> int:
         if "renewal_count" in loan:
             renewal_count = loan["renewal_count"]
             try:
-                self.renewal_count = int(renewal_count)
+                return int(renewal_count)
             except ValueError:
                 self.report(
                     f"Unresolvable {renewal_count=} was replaced with 0.")
         else:
             self.report(f"Missing renewal count was replaced with 0.")
+        return 0
 
     def correct_for_1_day_loans(self):
         try: