from threading import local, Thread
import time
import random

class LocalStuff(local):
  def __init__(self, stuff, foo=1):
    local.__init__(self)
    self.stuff = stuff
    self.foo = foo

class TestThread(Thread):
  def __init__(self, stuff, name):
    Thread.__init__(self)
    self.stuff = stuff
    self.name = name

  def run(self):
    for x in range(10):
      self.stuff.stuff = self.name
      myStuff = self.stuff.stuff
      time.sleep(random.random() * 2)
      print("myStuff=%r, threadStuff=%r" % (myStuff, self.stuff.stuff))
      if myStuff != self.stuff.stuff:
         raise Exception()
      if self.stuff.foo != 1:
         raise Exception("foo should be 1")

if __name__ == "__main__":
    stuff = LocalStuff("main stuff")
    for x in range(20):
        TestThread(stuff, name=("thread-%d" % x)).start()

    print("main stuff=%r" % stuff.stuff)