Apply pylint's linting rules to examples/websocket/public/*.py.

examples/websocket/public/derivatives_status.py

@@ -10,14 +10,14 @@ bfx = Client(wss_host=PUB_WSS_HOST)
 
 @bfx.wss.on("derivatives_status_update")
 def on_derivatives_status_update(subscription: subscriptions.Status, data: DerivativesStatus):
-  print(f"{subscription}:", data)
+    print(f"{subscription}:", data)
 
 @bfx.wss.on("wss-error")
 def on_wss_error(code: Error, msg: str):
     print(code, msg)
 
 @bfx.wss.once("open")
-async def open():
+async def on_open():
     await bfx.wss.subscribe(Channel.STATUS, key="deriv:tBTCF0:USTF0")
 
-bfx.wss.run()
+bfx.wss.run()