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global variable not accessible withing thread

Real Raccoon answered on June 12, 2021 Popularity 1/10 Helpfulness 1/10

answer global variable not accessible withing thread

global variable not accessible withing thread

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from threading import Thread
from queue import Queue
import time

def thread1(threadname, q):
    #read variable "a" modify by thread 2
    while True:
        a = q.get()
        if a is None: return # Poison pill
        print a

def thread2(threadname, q):
    a = 0
    for _ in xrange(10):
        a += 1
        q.put(a)
        time.sleep(1)
    q.put(None) # Poison pill

queue = Queue()
thread1 = Thread( target=thread1, args=("Thread-1", queue) )
thread2 = Thread( target=thread2, args=("Thread-2", queue) )

thread1.start()
thread2.start()
thread1.join()
thread2.join()

Popularity 1/10 Helpfulness 1/10 Language python

Source: stackoverflow.com

Tags: accessible global python

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