3 # Copyright 2016 Facebook, Inc.

     3 # Copyright 2016 Facebook, Inc.

     4 #

     4 #

     5 # This software may be used and distributed according to the terms of the

     5 # This software may be used and distributed according to the terms of the

     6 # GNU General Public License version 2 or any later version.

     6 # GNU General Public License version 2 or any later version.

     7 

     7 

     9 

     8 

    10 import logging

     9 import logging

    11 import os

    10 import os

    12 import time

    11 import time

    13 

    12