Fix mismatch on versions

fastapi/encoders.py

@@ -33,16 +33,19 @@ from pydantic.networks import AnyUrl, NameEmail
 from pydantic.types import SecretBytes, SecretStr
 from pydantic_core import PydanticUndefinedType
 
+encoders_by_extra_type: dict[type[Any], Callable[[Any], Any]] = {}
 try:
     from pydantic_extra_types import color as et_color
+
+    encoders_by_extra_type[et_color.Color] = str
+except ImportError:
+    pass
+try:
     from pydantic_extra_types import coordinate
 
-    encoders_by_extra_type: dict[type[Any], Callable[[Any], Any]] = {
-        coordinate.Coordinate: str,
-        et_color.Color: str,
-    }
+    encoders_by_extra_type[coordinate.Coordinate] = str
 except ImportError:
-    encoders_by_extra_type = {}
+    pass
 
 from ._compat import (
     Url,

tests/test_jsonable_encoder.py

@@ -1,4 +1,3 @@
-import sys
 import warnings
 from collections import deque, namedtuple
 from collections.abc import Sequence
@@ -430,20 +429,12 @@ def test_encode_pydantic_extra_types_coordinate():
     assert jsonable_encoder(coord) == str(coord)
 
 
-@pytest.mark.skipif(
-    sys.version_info >= (3, 10),
-    reason="Tested via pydantic_extra_types on Python >= 3.10",
-)
 def test_encode_pydantic_color():
     pydantic_color = pytest.importorskip("pydantic.color")
     color = pydantic_color.Color("red")
     assert jsonable_encoder(color) == str(color)
 
 
-@pytest.mark.skipif(
-    sys.version_info < (3, 10),
-    reason="pydantic_extra_types.color not available on Python < 3.10",
-)
 def test_encode_pydantic_extra_types_color():
     et_color = pytest.importorskip("pydantic_extra_types.color")
     color = et_color.Color("red")