Update type hints to appease Pylance and stricter mypy settings

2 files changed, 8 insertions, 5 deletions

diff --git a/requests_cache/serializers/cattrs.py b/requests_cache/serializers/cattrs.py
index 13d05e6..bf45c2d 100644
--- a/requests_cache/serializers/cattrs.py
+++ b/requests_cache/serializers/cattrs.py
@@ -14,7 +14,7 @@ serialization formats.
 from datetime import datetime, timedelta
 from decimal import Decimal
 from json import JSONDecodeError
-from typing import Callable, Dict, ForwardRef, MutableMapping
+from typing import Callable, Dict, ForwardRef, MutableMapping, Optional
 
 from cattr import Converter
 from requests.cookies import RequestsCookieJar, cookiejar_from_dict
@@ -50,7 +50,10 @@ class CattrStage(Stage):
     """
 
     def __init__(
-        self, factory: Callable[..., Converter] = None, decode_content: bool = False, **kwargs
+        self,
+        factory: Optional[Callable[..., Converter]] = None,
+        decode_content: bool = False,
+        **kwargs
     ):
         self.converter = init_converter(factory, **kwargs)
         self.decode_content = decode_content
@@ -68,7 +71,7 @@ class CattrStage(Stage):
 
 
 def init_converter(
-    factory: Callable[..., Converter] = None,
+    factory: Optional[Callable[..., Converter]] = None,
     convert_datetime: bool = True,
     convert_timedelta: bool = True,
 ) -> Converter:
diff --git a/requests_cache/serializers/pipeline.py b/requests_cache/serializers/pipeline.py
index 652c8f5..320e498 100644
--- a/requests_cache/serializers/pipeline.py
+++ b/requests_cache/serializers/pipeline.py
@@ -4,7 +4,7 @@
    :classes-only:
    :nosignatures:
 """
-from typing import Any, Callable, Sequence, Union
+from typing import Any, Callable, Optional, Sequence, Union
 
 from ..models import CachedResponse
 
@@ -43,7 +43,7 @@ class SerializerPipeline:
         is_binary: Indicates whether the serialized content is binary
     """
 
-    def __init__(self, stages: Sequence, name: str = None, is_binary: bool = False):
+    def __init__(self, stages: Sequence, name: Optional[str] = None, is_binary: bool = False):
         self.is_binary = is_binary
         self.stages = stages
         self.dump_stages = [stage.dumps for stage in stages]