I want to create a server in twisted that has a permanent variable which i want to use as the number of request requested to the server. When i use that for Protocol, each time the variable is created newly.

Then i used
class Echo(Protocol):
    def dataReceived(self, data):
  
        if "data" not in dir(self.factory):
            self.factory.data = 0
        self.factory.data = self.factory.data + 1

        """As soon as any data is received, write it back."""
        self.transport.write(data + str(self.factory.data))


but i want to remove the code that is:

        if "data" not in dir(self.factory):
            self.factory.data = 0
        self.factory.data = self.factory.data + 1


How to do that?