用python簡單的測試一下多線程

__author__ = 'Administrator'
#/usr/env/bin python

'''
  this is document
'''
import threading
import time
import copy

class count():
    msg =""
    def __init__(self):
        pass
    def add(self,content):
        self.msg+= content
        print(self.msg)


class bank(threading.Thread):
    def __init__(self,count):
        threading.Thread.__init__(self)
        self.count = count
    def run(self):
        while True:
            self.count.add(self.getName())
            time.sleep(1)

if __name__ == '__main__':
    cn = count()
    b = bank(cn)
    b.start()
    time.sleep(2)
    c = bank(cn)
    c.start()