python 多线程笔记（3）-- 线程的私有命名空间

import threading
import time
import random


threading_namespace = threading.local() # 命名空间

def print_country():
    thread_name = threading.current_thread().getName()
    country = threading_namespace.country      # 获取变量
    print(‘{}  {}‘.format(thread_name, country))

def my_func(country):
    threading_namespace.country = country  # 设置变量
    
    for i in range(4):
        time.sleep(random.randrange(1,7))
        print_country()

        
if __name__ == ‘__main__‘:
    
    countries = [‘America‘,‘China‘,‘Jappen‘,‘Russia‘]
    
    threads = []
    for country in countries:
        threads.append(threading.Thread(target= my_func, args=(country,)))

    for t in threads:
        t.start()
        
    for t in threads:
        t.join()