sodastsai

from __future__ import absolute_import, division, print_function, unicode_literals

from multiprocessing.dummy import Pool as ThreadPool
from multiprocessing import Lock
from threading import get_ident


class SingletonType(type):
    def __new__(mcs, name, bases, attrs):
        # Assume the target class is created (i.e. this method to be called) in the main thread.