get_arguments() takes 4 positional arguments but 5 were given

[jeremy_fourman]

Hello -

We are wanting to test full script support to enable our data science team to do some cool stuff! 🙂

I have worked through all the pieces and been reading all the documentation available - thank you all who contribute!!

I decided on using the following as a starting point for our work.

https://github.com/qlik-oss/server-side-extension/tree/master/examples/python/fullscriptsupport

However in testing the example - I receive during load the following error.

'The following error occurred:

Connector reply error: grpc::StatusCode::UNKNOWN: 'Exception iterating responses: get_arguments() takes 4 positional arguments but 5 were given''

I have validated the method and call definitions match within ScriptEval. Compared my code against example code etc.

Not sure where to head next - would be glad to know if anyone else has encountered this. I feel like I am missing something small or that maybe it is a gRPC issue?

For reference here is the line that fails:

params = self.get_arguments(context, arg_types, row.duals, header)

And the method definition:

def get_arguments(context, arg_types, duals, header):

Thank you.

Jeremy

[jeremy_fourman · Accepted solution]

A little research and coffee made me understand that self was being passed as the additional argument to the function.

That made me go hmmmm and look at the function definition again compared to the example. I forgot to tag it static.

So the correct definition was

@staticmethod    
def get_arguments(context, arg_types, duals, header):

Now we are able to start testing!

Thanks.