Python Threading -- Threads not starting

Question

I'm quite new to the threading module, but my problem is that threads appear to not start.I tried to use the currentThread function to see is they are new threads starting but the only thing I see is the Main thread.Also, in every tutorial I see they use classes or subclasses, like class t(threading.Thread). So is it my method that's wrong or do I have to use classes to start threads in python 3. Here is some scripts I wrote:

The first:

    import threading

    def basicThread(threadName,nr):
        print("Thread name ",threadName,", alive threads ",nr)

    for i in range(0,11):
        print(threading.activeCount())
        print(threading.currentThread())
        t = threading.Thread(target = basicThread,args = ("Thread - %s" %i,i,))
        t.start()
        t.join()

Second :

import threading

def openFile():
    try:
        file = open("haha.txt","r+")
        print("Finished in opening file : {0}".format(file))
    except IOError as e:
           print("Error : {0}".format(e))

def user(threadName,count):
    age = int(input("Enter your age : "))
    name = str(input("Enter your name : "))
    print(age,name)
    print(threadName,count)

threadList = []

thread_1 = threading.Thread(target = openFile)
thread_1.start()
thread_1.join()
thread_2 = threading.Thread(target = user,args = ("Thread - 2",threading.activeCount()))
thread_2.start()
thread_2.join()

Alexandre Pinho · Accepted Answer · 2014-02-09 19:21:11Z

5

What thread.join() does is it waits for the thread to end what it's doing. To allow other threads to start, move this line to the end of the procedure.

answered Feb 9, 2014 at 19:21

Alexandre Pinho

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1 Comment

Xavier Combelle Over a year ago

... and outside the for loop in thefirst example

vidhya lakshmi · Accepted Answer · 2016-08-26 17:17:41Z

1

current_thread() returns main thread because you invoke it in the main method. The line printed from the method "basicThread" denotes the actual thread that runs that method ( which are the newly formed threads).
Move the thread_1.join() to the bottom as in the previous answer

answered Aug 26, 2016 at 17:17

vidhya lakshmi

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