Problem in python script for phone call from skype account

I am trying to make a python script phone call from a skype account. It works once, and once it gives a segmentation error, and once it works without errors, but without output. I used the following script for this since

import Skype4Py
import sys
skype = Skype4Py.Skype()
skype.Attach()
m_PhoneNumber = "919763667993"
m_Call = skype.PlaceCall(m_PhoneNumber)

Please give me a solution for this, I think it could be Skype4Py.api.posix_dbus.SkypeAPI Thread Problem, but not getting a solution for this.