diff --git a/doc/conf.py b/doc/conf.py
index 6ef7904..8705a7d 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -33,4 +33,3 @@
 
 autodoc_member_order = "bysource"
 autodoc_default_flags = ["members", "special-members"]
-
diff --git a/src/ua_parser/caching.py b/src/ua_parser/caching.py
index 0619235..e115dc4 100644
--- a/src/ua_parser/caching.py
+++ b/src/ua_parser/caching.py
@@ -6,10 +6,12 @@
 
 __all__ = [
     "CachingParser",
-
-    "Cache", "Clearing",  "LRU",
+    "Cache",
+    "Clearing",
+    "LRU",
 ]
 
+
 class Cache(abc.ABC):
     """Cache abstract protocol. The :class:`CachingParser` will look
     values up, merge what was returned (possibly nothing) with what it
@@ -17,16 +19,15 @@ class Cache(abc.ABC):
 
     A :class:`Cache` is responsible for its own replacement policy.
     """
+
     @abc.abstractmethod
     def __setitem__(self, key: str, value: PartialParseResult):
-        """Adds or replace ``value`` to the cache at key ``key``. 
-        """
+        """Adds or replace ``value`` to the cache at key ``key``."""
         ...
 
     @abc.abstractmethod
     def __getitem__(self, key: str) -> Optional[PartialParseResult]:
-        """Returns a partial result for ``key`` if there is any.
-        """
+        """Returns a partial result for ``key`` if there is any."""
         ...
 
 
diff --git a/src/ua_parser/types.py b/src/ua_parser/types.py
index 447b1b4..8d6353b 100644
--- a/src/ua_parser/types.py
+++ b/src/ua_parser/types.py
@@ -5,11 +5,14 @@
 from typing import *
 
 __all__ = [
-    "UserAgent", "OS", "Device",
-
-    "ParseResult", "DefaultedParseResult",
-
-    "Parser", "Domain", "PartialParseResult",
+    "UserAgent",
+    "OS",
+    "Device",
+    "ParseResult",
+    "DefaultedParseResult",
+    "Parser",
+    "Domain",
+    "PartialParseResult",
 ]