[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

django_afip/admin.py

@@ -337,10 +337,7 @@ def generate_csr(self, request, queryset):
             taxpayer.generate_key()
 
         csr = taxpayer.generate_csr()
-        filename = "cuit-{}-{}.csr".format(
-            taxpayer.cuit,
-            int(datetime.now().timestamp()),
-        )
+        filename = f"cuit-{taxpayer.cuit}-{int(datetime.now().timestamp())}.csr"
 
         response = HttpResponse(content_type="application/pkcs10")
         response["Content-Disposition"] = f"attachment; filename={filename}"

django_afip/models.py

@@ -423,9 +423,7 @@ def logo_as_data_uri(self) -> str:
         with self.logo.open() as f:
             data = base64.b64encode(f.read())
 
-        return "data:image/{};base64,{}".format(
-            ext[1:], data.decode()  # Remove the leading dot.
-        )
+        return f"data:image/{ext[1:]};base64,{data.decode()}"
 
     @property
     def certificate_object(self) -> X509 | None:
@@ -572,11 +570,7 @@ def fetch_points_of_sales(
         return results
 
     def __repr__(self) -> str:
-        return "<TaxPayer {}: {}, CUIT {}>".format(
-            self.pk,
-            self.name,
-            self.cuit,
-        )
+        return f"<TaxPayer {self.pk}: {self.name}, CUIT {self.cuit}>"
 
     def __str__(self) -> str:
         return str(self.name)
@@ -977,10 +971,7 @@ def _validate(self, ticket=None) -> list[str]:
             elif cae_data.Observaciones:
                 for obs in cae_data.Observaciones.Obs:
                     errs.append(
-                        "Error {}: {}".format(
-                            obs.Code,
-                            parsers.parse_string(obs.Msg),
-                        )
+                        f"Error {obs.Code}: {parsers.parse_string(obs.Msg)}"
                     )
 
         # Remove the number from ones that failed to validate:
@@ -1227,10 +1218,7 @@ def total_tax(self) -> int:
     def formatted_number(self) -> str | None:
         """This receipt's number in the usual format: ``0001-00003087``."""
         if self.receipt_number:
-            return "{:04d}-{:08d}".format(
-                self.point_of_sales.number,
-                self.receipt_number,
-            )
+            return f"{self.point_of_sales.number:04d}-{self.receipt_number:08d}"
         return None
 
     @property