更新

Python-100-Days/Day01-15/Day13/multithread6.py

@@ -0,0 +1,46 @@
+"""
+
+多个线程共享数据 - 有锁的情况
+
+Version: 0.1
+Author: 骆昊
+Date: 2018-03-20
+
+"""
+
+import time
+import threading
+
+
+class Account(object):
+
+	def __init__(self):
+		self._balance = 0
+		self._lock = threading.Lock()
+
+	def deposit(self, money):
+		# 获得锁后代码才能继续执行
+		self._lock.acquire()
+		try:
+			new_balance = self._balance + money
+			time.sleep(0.01)
+			self._balance = new_balance
+		finally:
+			# 操作完成后一定要记着释放锁
+			self._lock.release()
+
+	@property
+	def balance(self):
+		return self._balance
+
+
+if __name__ == '__main__':
+	account = Account()
+	# 创建100个存款的线程向同一个账户中存钱
+	for _ in range(100):
+		threading.Thread(target=account.deposit, args=(1,)).start()
+	# 等所有存款的线程都执行完毕
+	time.sleep(2)
+	print('账户余额为: ￥%d元' % account.balance)
+
+# 想一想结果为什么不是我们期望的100元