# ThreadLocal
'''
1. 一個ThreadLocal變量雖然是全局變量，但每個線程都只能讀寫自己線程上的獨立副本，互不干擾。
2. 解決了參數(shù)在一個線程中各個函數(shù)之間互相傳遞的問題
'''

import threading

# 創(chuàng)建全局ThreadLocal對象
local_school = threading.local()

def process_student():
    # 獲取當前線程關聯(lián)的student
    std = local_school.student
    print('Hello, %s (in %s)' % (std, threading.current_thread().name))

def process_thread(name):
    # 綁定ThreadLocal的student
    local_school.student = name
    process_student()

t1 = threading.Thread(target=process_thread, args=('Alice',), name='Thread-A')
t2 = threading.Thread(target=process_thread, args=('Bob',), name='Thread-B')
t1.start()
t2.start()
t1.join()
t2.join()