Fix value error formatting (#1827)

Author: dariocurr

faker/providers/python/__init__.py

@@ -87,7 +87,7 @@ def pyobject(
         elif object_type == dict:
             return self.pydict()
         else:
-            raise ValueError("Object type `{object_type}` is not supported by `pyobject` function")
+            raise ValueError(f"Object type `{object_type}` is not supported by `pyobject` function")
 
     def pybool(self, truth_probability: int = 50) -> bool:
         """

tests/providers/test_python.py

@@ -24,7 +24,7 @@ def test_pyobject(
 
 @pytest.mark.parametrize("object_type", (object, type, callable))
 def test_pyobject_with_unknown_object_type(object_type):
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match=f"Object type `{object_type}` is not supported by `pyobject` function"):
         assert Faker().pyobject(object_type=object_type)