标签：font bsp block pytho code this log under ack
class threading.Condition(lock=None)
This class implements condition variable objects. A condition variable allows one or more threads to wait until they are notified by another thread.
If the lock argument is given and not None, it must be a Lock or RLock object, and it is used as the underlying lock.
Otherwise, a new RLock object is created and used as the underlying lock.
也就是说，如果condition构造函数lock参数为空的话，会自动创建可重入锁RLock。
可重入锁RLock，同一线程可以多次获取（the same thread may acquire it again without blocking）。
标签：font bsp block pytho code this log under ack
原文地址：http://www.cnblogs.com/ph829/p/7113282.html
