Python Library learning Notes (threading Library)

The Import threadingthreading module providesclass。

1. Thread: An object that represents the execution of a thread.

2. Lock: Locking Primitive Object

3. Rlock: The lock object can be re-entered. Enables a single thread to get the lock already acquired again.

4. Condition: Condition Variable object. Allows a thread to stop waiting for another thread to meet the "one" condition.

5. Event: a generic condition variable. Multiple threads can wait for a certain time to occur, and all threads are activated after the event occurs.

6. Semaphore: Provides a "waiting room" structure for the thread waiting for the lock

7. Timer: Similar to thread, except that it waits some time before it starts to run.

Threading'sThread ClassIn the method.

1. Thread.Start (): Start thread execution.

2. thread.join(timeout=none): Blocks the main program until the thread ends and if timeout is given, it blocks timeout seconds.

3. Thread.run (): Defines the functionality of a thread (typically overridden by a quilt class)

4. Thread.getname (): Returns the name of the thread.

5. Thread.setname (): Sets the name of the thread.

6. Thread.isalive (): Checks if the thread is still executing.

7. Thread.isdaemon (): see if the thread is a daemon thread.

8. Thread.setdaemon (): True to set the daemon thread , false is not, be sure to call before the start () method.

Instance:

1 #-*-Coding:utf-82 ImportThreading3  fromTimeImportCTime, Sleep4 5 defMusic (func):6      forIinchRange (2):7         Print "I was listening to%s.%s"%(func, CTime ())8Sleep (1)9 Ten defMovie (func): One      forIinchRange (2): A         Print "I was watching the%s.%s"%(func, CTime ()) -Sleep (5) -  the #Start Creating Threads -Threads = [] -T1 = Threading. Thread (Target=music, args= (U'Love Business',)) - threads.append (t1) +T2 = Threading. Thread (Target=movie, args= (U' Avatar',)) - threads.append (T2) +  A  at if __name__=='__main__': -      forTinchThreads: -T.start ()#Running Threads -T.join ()#blocks the main process until the second thread ends.  -     PrintU' Over', CTime ()

If the 18th line is stacked behind the 20th line of code, a different result will appear. Because T.join () in the 26th line of code can only guarantee the end of the last thread in the loop, it is possible to set a join () method for each thread.

1  for inch Threads: 2     T.join

Reference blog:

Https://www.cnblogs.com/fnng/p/3670789.html

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Python Library learning Notes (threading Library)