[metate]

The following is a little piece of code I use in Meta video addon to call JSON-RPC.
It may be good for beginners to use it when they need to call json-rpc from python.
Either CammelCase or the more pythonic underscore format can be used.
Example usage:

Code:

db_movies = RPC.video_library.get_movies(properties=['title', 'imdbnumber','file'])

Code:

import json
import xbmc

class RPCType(type):
    def __getattr__(cls, category):
        return Category(category)

class RPC(object):
    __metaclass__ = RPCType
    
class Category(object):
    def __init__(self, name):
        self.name = name
        
    def __str__(self):
        return self.name.title().replace("_", "")
    
    def __getattr__(self, method):
        return Method(self, method)


class Method(object):
    def __init__(self, category, name):
        self.category = category
        self.name = name
            
    def __str__(self):
        return self.name.title().replace("_", "")
        
    def __call__(self, **kwargs):
        method = "%s.%s" % (str(self.category), str(self))
        query = {"method": method, "params": kwargs}
        return json_query(query)
        
class RPCError(Exception):
    pass
    
def json_query(query):
    if not "jsonrpc" in query:
        query["jsonrpc"] = "2.0"
    if not "id" in query:
        query["id"] = 1
    
    xbmc_request = json.dumps(query)
    raw = xbmc.executeJSONRPC(xbmc_request)
    clean = unicode(raw, 'utf-8', errors='ignore')
    response = json.loads(clean)
    if "error" in response:
        raise RPCError(response["error"])
    return response.get('result', response)