fix(no_NO): compute Norwegian MOD11 check digit so iban() passes stdnum validation

faker/providers/bank/no_NO/__init__.py

@@ -6,3 +6,13 @@ class Provider(BankProvider):
 
     bban_format = "###########"
     country_code = "NO"
+
+    def bban(self) -> str:
+        """Generate a valid BBAN with correct MOD11 check digit."""
+        for _ in range(100):
+            first_10 = self.numerify("##########")
+            weights = (6, 7, 8, 9, 4, 5, 6, 7, 8, 9)
+            check = sum(w * int(d) for w, d in zip(weights, first_10)) % 11
+            if check != 10:
+                return first_10 + str(check)
+        return first_10 + "0"

tests/providers/test_bank.py

@@ -409,6 +409,14 @@ def test_iban(self, faker, num_samples):
             assert iban[:2] == NoNoBankProvider.country_code
             assert re.fullmatch(r"\d{2}\d{11}", iban[2:])
 
+    def test_iban_stdnum(self, faker, num_samples):
+        try:
+            from stdnum import iban as iban_validator
+        except ImportError:
+            pytest.skip("stdnum not available")
+        for _ in range(num_samples):
+            iban_validator.validate(faker.iban())
+
 
 class TestPlPl:
     """Test pl_PL bank provider"""