多线程

import threading

def worker():
    print('new thread..')
    print(threading.current_thread().getName()) 

if __name__ == '__main__':
    print('hello')
    t = threading.current_thread()
    print(t.getName())  # MainThread
    th1 = threading.Thread(target=worker, name='my Thread')
    th1.start()

from werkzeug.local import Local

class A(object):
    a = 100

obj = Local()
obj.a = 1

def fun():
    obj.a = 20
    print('in new thread obj.a ia', obj.a)

if __name__ == '__main__':
    t = threading.Thread(target=fun, name='mythread')
    t.start()
    time.sleep(1)
    print('in main thread obj.a is' ,obj.a)