Revised the coding style according to PEP8.

accounting/urls.py

@@ -37,8 +37,8 @@ register_converter(converters.DateConverter, "date")
 app_name = "accounting"
 urlpatterns = [
     path("", require_GET(login_required(RedirectView.as_view(
-        query_string = True,
-        pattern_name = "accounting:cash.home",
+        query_string=True,
+        pattern_name="accounting:cash.home",
     ))), name="home"),
     path("cash",
          views.CashDefaultView.as_view(), name="cash.home"),

accounting/views.py

@@ -124,8 +124,9 @@ def cash(request, account, period):
         balance = balance + sign * record.amount
         record.balance = balance
     record_sum = Record(
-        transaction=Transaction(date=records[-1].transaction.date)
-        if len(records)>0 else Transaction(date=timezone.localdate()),
+        transaction=(Transaction(date=records[-1].transaction.date)
+                     if len(records) > 0
+                     else Transaction(date=timezone.localdate())),
         account=account,
         summary=pgettext("Accounting|", "Total"),
         balance=balance
@@ -466,8 +467,7 @@ def journal(request, period):
             is_credit=True,
             amount=sum_debits - sum_credits
         ))
-    records = list(debit_records) + list(credit_records) \
-              + list(records)
+    records = list(debit_records) + list(credit_records) + list(records)
     pagination = Pagination(request, records, True)
     return render(request, "accounting/journal.html", {
         "item_list": pagination.items,