fix: Linter errors

Author: KShivendu

supertokens_python/querier.py

@@ -45,7 +45,7 @@ class Querier:
     __init_called = False
     __hosts: List[Host] = []
     __api_key: Union[None, str] = None
-    __api_version = None
+    api_version = None
     __last_tried_index: int = 0
     __hosts_alive_for_testing: Set[str] = set()
 
@@ -72,8 +72,8 @@ def get_hosts_alive_for_testing():
         return Querier.__hosts_alive_for_testing
 
     async def get_api_version(self):
-        if Querier.__api_version is not None:
-            return Querier.__api_version
+        if Querier.api_version is not None:
+            return Querier.api_version
 
         ProcessState.get_instance().add_state(
             AllowedProcessStates.CALLING_SERVICE_IN_GET_API_VERSION
@@ -99,8 +99,8 @@ async def f(url: str) -> Response:
                 "to find the right versions"
             )
 
-        Querier.__api_version = api_version
-        return Querier.__api_version
+        Querier.api_version = api_version
+        return Querier.api_version
 
     @staticmethod
     def get_instance(rid_to_core: Union[str, None] = None):
@@ -116,7 +116,7 @@ def init(hosts: List[Host], api_key: Union[str, None] = None):
             Querier.__init_called = True
             Querier.__hosts = hosts
             Querier.__api_key = api_key
-            Querier.__api_version = None
+            Querier.api_version = None
             Querier.__last_tried_index = 0
             Querier.__hosts_alive_for_testing = set()