lock_thread.py

import time
import threading

lock = threading.Lock()
class Account:
 def __init__(self, balance):
 self.balance = balance

def draw_money(account, amount):
 # 使用with lock包裹代码
 with lock:
 if account.balance >= amount:
 # time.sleep(1)
 print(threading.current_thread().name, '取钱成功')
 account.balance -= amount
 print(threading.current_thread().name, "余额", account.balance)
 else:
 print(threading.current_thread().name, '取消失败，余额不足')

if __name__ == '__main__':
 account = Account(1000)
 t1 = threading.Thread(target=draw_money, args=(account, 600))
 t2 = threading.Thread(target=draw_money, args=(account, 600))
 t1.start()
 t2.start()