speed up,only "function" need "params"

when type is "module" or "class", then throw error , is very slowly

plugins/c9.ide.language.python/server/jedi_server.py

@@ -50,6 +50,7 @@ class Daemon(BaseHTTPRequestHandler):
 def to_json(mode, nodoc):
     include_pos = mode == "goto_definitions"
     def to_json(c):
+        if c.type == "function":
             try:
                 paramList = { p.description for p in c.params }
                 params = ", ".join([p for p in paramList if p != None and p != "self"])