feat: cache Method.method_selector_fn

Author: BobTheBuidler

web3/method.py

@@ -166,7 +166,7 @@ def __get__(
             )
 
         provider = module.w3.provider
-        if hasattr(provider, "_is_batching") and provider._is_batching:
+        if getattr(provider, "_is_batching", False):
             if self.json_rpc_method in RPC_METHODS_UNSUPPORTED_DURING_BATCH:
                 raise MethodNotSupported(
                     f"Method `{self.json_rpc_method}` is not supported within a batch "
@@ -179,15 +179,15 @@ def __get__(
     def __call__(self, *args: Any, **kwargs: Any) -> Any:
         return self.__get__(self._module)(*args, **kwargs)
 
-    @property
+    @functools.cached_property
     def method_selector_fn(
         self,
-    ) -> Callable[..., Union[RPCEndpoint, Callable[..., RPCEndpoint]]]:
+    ) -> Callable[[], RPCEndpoint]:
         """Gets the method selector from the config."""
         if callable(self.json_rpc_method):
             return self.json_rpc_method
         elif isinstance(self.json_rpc_method, (str,)):
-            return lambda *_: self.json_rpc_method
+            return lambda: self.json_rpc_method
         raise Web3ValueError(
             "``json_rpc_method`` config invalid.  May be a string or function"
         )