Created by: liuyuecheng-github
Add the function to get and set attributes of remote models.
i.e. we can operate the remote object in the following way,
import parl
class Agent(object):
def __init__(self):
self.b = 0
parl.connect('localhost:8400')
agent = Agent()
print(agent.b) # 0
agent.b = 5
print(agent.b) # 5