Dynamic function calls in Python using XMLRPC

Question

I'm writing a class which I intend to use to create subroutines, constructor as following:

def __init__(self,menuText,RPC_params,RPC_call):
   #Treat the params
   #Call the given RPC_call with the treated params

The problem is that I want to call the function on the pattern "rpc.serve.(function name here)(params)", where rpc is a serverProxy object that I'm using to call XMLRPC functions, and serve.-function name- is the method I'm calling on the XMLRPC-server.

I've looked at Calling a function from a string with the function's name in Python, but seeing how my serverProxy object doesnt know which "remote attributes" it have, I cant use the getattr() function to retrieve the method.

I've seen a example by making a dictionary to call a given function, but is there no way to make the function truly dynamic by creating the function call as you would create a String? Like running a String as a function?

Why do you want this pattern? why not rpc.functionName(params)? — Nadia Alramli
– Nadia Alramli, Commented May 23, 2009 at 11:55
If you mean why I added "serve" ,its just for logical grouping of functions on the server, and nothing functional. — Duveit
– Duveit, Commented May 23, 2009 at 13:11

dF. · Accepted Answer · 2009-05-23 11:53:56Z

2

You can use getattr to get the function name from the server proxy, so calling the function like this will work:

getattr(rpc, function_name)(*params)

answered May 23, 2009 at 11:53

dF.

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2 Comments

Duveit Over a year ago

You're right! Didnt know. But I still would like to know if its possible to run a given String as a method without using getattr() though. Even when I see the obvious pro's of using the getattr() method.

Alex Martelli Over a year ago

You could "run the string" via eval or exec, but that would be supremely [expletive deleted], with no advantage at all wrt getattr and more disadvantages than you can shake a stick at.

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