# http://docs.python.org/2/library/inspect.html
# https://github.com/dotcloud/zerorpc-python/blob/master/zerorpc/decorators.py

import inspect

class Foo(object):
   pass

#from twisted.internet.defer import inlineCallbacks

#@asyncio.coroutine
import asyncio

#@inlineCallbacks
@asyncio.coroutine
def add2(a, b = 3, c = Foo, d = "klj", *args, **kwargs):
   """
   Adds 2 numbers.

   :param a: First number.
   :type a: int
   :param b: Second number.
   :type b: int
   :returns: int -- The sum of both numbers.
   """
   return a + b

def get_class_default_arg(fn, klass):
   argspec = inspect.getargspec(fn)
   if argspec and argspec.defaults:
      for i in range(len(argspec.defaults)):
         if argspec.defaults[-i] == klass:
            return argspec.args[-i]
   return None

print(inspect.signature(add2))
print(inspect.getargspec(add2))
print(get_class_default_arg(add2, Foo))
print(inspect.cleandoc(add2.__doc__))