Merge pull request #221398 from kgremban/dec13-hub102379

Add variable instance

Author: JamesJBarnett

articles/iot-hub/iot-hub-python-python-module-twin-getstarted.md

@@ -197,37 +197,40 @@ In this section, you create a Python app to get the module twin desired properti
 
 1. Add the following code to your Python file. Replace *YourModuleConnectionString* with the module connection string you copied in step 1.
 
-    ```python
-    import time
-    from azure.iot.device import IoTHubModuleClient
+   ```python
+   import time
+   from azure.iot.device import IoTHubModuleClient
 
-    def twin_patch_handler(twin_patch):
-        print("")
-        print("Twin desired properties patch received:")
-        print(twin_patch)
+   CONNECTION_STRING = "YourIotHubConnectionString"
 
 
-    def main():
-        print ("Starting the IoT Hub Python sample...")
-        client = IoTHubModuleClient.create_from_connection_string(CONNECTION_STRING)
+   def twin_patch_handler(twin_patch):
+       print("")
+       print("Twin desired properties patch received:")
+       print(twin_patch)
 
-        print ("Waiting for commands, press Ctrl-C to exit")
-        try:
-            # Attach the handler to the client
-            client.on_twin_desired_properties_patch_received = twin_patch_handler
-
-            while True:
-                time.sleep(1000)
-        except KeyboardInterrupt:
-            print("IoTHubModuleClient sample stopped")
-        finally:
-            # Graceful exit
-            print("Shutting down IoT Hub Client")
-            client.shutdown()
-
-    if __name__ == '__main__':
-        main()
-    ```
+
+   def main():
+       print ("Starting the IoT Hub Python sample...")
+       client = IoTHubModuleClient.create_from_connection_string(CONNECTION_STRING)
+
+       print ("Waiting for commands, press Ctrl-C to exit")
+       try:
+           # Attach the handler to the client
+           client.on_twin_desired_properties_patch_received = twin_patch_handler
+
+           while True:
+               time.sleep(1000)
+       except KeyboardInterrupt:
+           print("IoTHubModuleClient sample stopped")
+       finally:
+           # Graceful exit
+           print("Shutting down IoT Hub Client")
+           client.shutdown()
+
+   if __name__ == '__main__':
+       main()
+   ```
 
 ## Run the apps