linting of server-callback example

examples/server-callback.py

-import sys
-sys.path.insert(0, "..")
 import logging
-from datetime import datetime
 import asyncio
 
 try:
@@ -16,38 +13,37 @@ except ImportError:
         shell.interact()
 
 
-from asyncua import ua, uamethod, Server
+from asyncua import ua, Server
 from asyncua.common.callback import CallbackType
 
 
-
 def create_monitored_items(event, dispatcher):
-    print("Monitored Item")     
+    print("Monitored Item")
 
-    for idx in range(len(event.response_params)) :
-        if (event.response_params[idx].StatusCode.is_good()) :
+    for idx in range(len(event.response_params)):
+        if event.response_params[idx].StatusCode.is_good():
             nodeId = event.request_params.ItemsToCreate[idx].ItemToMonitor.NodeId
             print(f"Node {nodeId} was created")
-         
-    
+
+
 def modify_monitored_items(event, dispatcher):
-    print('modify_monitored_items')
+    print("modify_monitored_items")
 
 
 def delete_monitored_items(event, dispatcher):
-    print('delete_monitored_items')
+    print("delete_monitored_items")
 
 
 async def main():
     # optional: setup logging
     logging.basicConfig(level=logging.WARN)
-    #logger = logging.getLogger("asyncua.address_space")
+    # logger = logging.getLogger("asyncua.address_space")
     # logger.setLevel(logging.DEBUG)
-    #logger = logging.getLogger("asyncua.internal_server")
+    # logger = logging.getLogger("asyncua.internal_server")
     # logger.setLevel(logging.DEBUG)
-    #logger = logging.getLogger("asyncua.binary_server_asyncio")
+    # logger = logging.getLogger("asyncua.binary_server_asyncio")
     # logger.setLevel(logging.DEBUG)
-    #logger = logging.getLogger("asyncua.uaprocessor")
+    # logger = logging.getLogger("asyncua.uaprocessor")
     # logger.setLevel(logging.DEBUG)
     logger = logging.getLogger("asyncua.subscription_service")
     logger.setLevel(logging.DEBUG)
@@ -55,8 +51,8 @@ async def main():
     # now setup our server
     server = Server()
     await server.init()
-    #await server.disable_clock()
-    #server.set_endpoint("opc.tcp://localhost:4840/freeopcua/server/")
+    # await server.disable_clock()
+    # server.set_endpoint("opc.tcp://localhost:4840/freeopcua/server/")
     server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
     server.set_server_name("FreeOpcUa Example Server")
 
@@ -71,20 +67,19 @@ async def main():
     myfolder = await objects.add_folder(idx, "myEmptyFolder")
     myobj = await objects.add_object(idx, "MyObject")
     myvar = await myobj.add_variable(idx, "MyVariable", 6.7)
-    await myvar.set_writable()    # Set MyVariable to be writable by clients
-   
+    await myvar.set_writable()  # Set MyVariable to be writable by clients
 
     # starting!
     await server.start()
-    
-    # Create Callback for item event 
+
+    # Create Callback for item event
     server.subscribe_server_callback(CallbackType.ItemSubscriptionCreated, create_monitored_items)
     server.subscribe_server_callback(CallbackType.ItemSubscriptionModified, modify_monitored_items)
     server.subscribe_server_callback(CallbackType.ItemSubscriptionDeleted, delete_monitored_items)
-    
+
     while True:
         await asyncio.sleep(1)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     asyncio.run(main())