Network Programming-thread-2, how to see how many threads are running

The above section of code, for example, how to see the number of threads running, you need to call the enumerate method inside the threading module, return a list of thread numbers:

ImportThreadingImport Time"""the code for the above chapter is an example of how to see how many threads are running"""defSing ():"""sing for 5 seconds"""     forIinchRange (3):        Print('----------------')        Print('I'm singing ....') Time.sleep (1)defDance (): forIinchRange (5):        Print('I was dancing ....')        Print('----------------') Time.sleep (1)defMain (): T= Threading. Thread (target=sing) T2= Threading. Thread (target=dance) T.start () T2.start ()#cycles through the number of running threads, calling the enumerate method in the threading module to return a list of elements that are running threads, and the number of elements that are printed     whiletrue:nums=Len (threading.enumerate ())Print(Threading.enumerate ())#when there are no threads, exit        ifNums <= 1:             BreakTime.sleep (1)if __name__=='__main__': Main ()

The results of the operation are as follows:

I'm singing ....
I was dancing ....
[<_mainthread (Mainthread, started 26264), <thread (Thread-1, started 23804);, <thread (Thread-2, Started 24216);]
[<_mainthread (Mainthread, started 26264), <thread (Thread-1, started 23804);, <thread (Thread-2, Started 24216);]
I was dancing ....
I'm singing ....
[<_mainthread (Mainthread, started 26264), <thread (Thread-1, started 23804);, <thread (Thread-2, Started 24216);]
I'm singing ....
I was dancing ....
[<_mainthread (Mainthread, started 26264), <thread (Thread-1, started 23804);, <thread (Thread-2, Started 24216);]
I was dancing ....
[<_mainthread (Mainthread, started 26264), <thread (Thread-2, started 24216);]
I was dancing ....
[<_mainthread (Mainthread, started 26264), <thread (Thread-2, started 24216);]
[<_mainthread (Mainthread, started 26264);]

Explanations such as:

Network Programming-thread-2, how to see how many threads are running