Optional: Add auto-walrus (#158)

To learn the use of the Walrus opperator this hook integrates it in your
code if it finds a reason for it.
This branch is a suggestion of mine to force the use of the walrus
operaor as an autofix to keep it in mind when programming.
This should not increase the workload for us. It just lets us confront a
new programming tool. It also isn't a rull to be follwed. Just a hook
that looks at your code with an autofix.

.pre-commit-config.yaml

@@ -87,3 +87,8 @@ repos:
   rev: 0.26.3
   hooks:
   - id: check-github-workflows
+
+- repo: https://github.com/MarcoGorelli/auto-walrus
+  rev: v0.2.2
+  hooks:
+  - id: auto-walrus

src/aki_prj23_transparenzregister/utils/data_transfer.py

@@ -113,8 +113,7 @@ def get_district_court_id(name: str, city: str | None, db: Session) -> int:
         The id / privat key of a district court in the SQL-database.
     """
     name, city = _refine_district_court_entry(name, city)
-    court_id = _read_district_court_id(name, city, db)
-    if court_id is not None:
+    if (court_id := _read_district_court_id(name, city, db)) is not None:
         return court_id
     court = entities.DistrictCourt(name=name, city=city)
     db.add(court)
@@ -147,8 +146,7 @@ def get_person_id(
             f'At least one of the three values name: "{name}", surname: "{surname}" or date_of_birth: "{date_of_birth}" is empty.'
         )
     assert isinstance(date_of_birth, date)  # noqa: S101
-    person_id = _read_person_id(name, surname, date_of_birth, db)
-    if person_id is not None:
+    if (person_id := _read_person_id(name, surname, date_of_birth, db)) is not None:
         return person_id
     person = entities.Person(name=name, surname=surname, date_of_birth=date_of_birth)
     db.add(person)
@@ -404,6 +402,7 @@ def add_annual_financial_reports(companies: list[dict], db: Session) -> None:
             for year, report in yearly_results.items():
                 if not report:
                     continue
+
                 try:
                     year_int = int(year)
                 except ValueError: