Fix lint

Author: Archmonger

Diff for: docs/examples/python/custom_router_easy_resolver.py

@@ -1,13 +1,15 @@
+from typing import ClassVar
+
 from reactpy_router.resolvers import ConversionInfo, ReactPyResolver
 
 
 # Create a custom resolver that uses the following pattern: "{name:type}"
 class CustomResolver(ReactPyResolver):
     # Match parameters that use the "<name:type>" format
-    param_pattern = r"<(?P<name>\w+)(?P<type>:\w+)?>"
+    param_pattern: str = r"<(?P<name>\w+)(?P<type>:\w+)?>"
 
     # Enable matching for the following types: int, str, any
-    converters = {
+    converters: ClassVar[dict[str, ConversionInfo]] = {
         "int": ConversionInfo(regex=r"\d+", func=int),
         "str": ConversionInfo(regex=r"[^/]+", func=str),
         "any": ConversionInfo(regex=r".*", func=str),