python3 start new thread code example
Example 1: create new thread python
from threading import Thread
from time import sleep
def threaded_function(arg):
for i in range(arg):
print("running")
sleep(1)
if __name__ == "__main__":
thread = Thread(target = threaded_function, args = (10, ))
thread.start()
thread.join()
print("thread finished...exiting")
Example 2: Python3 - Multi Threaded Programming
#!/usr/bin/python3
import queue
import threading
import time
exitFlag = 0
class myThread (threading.Thread):
def __init__(self, threadID, name, q):
threading.Thread.__init__(self)
self.threadID = threadID
self.name = name
self.q = q
def run(self):
print ("Starting " + self.name)
process_data(self.name, self.q)
print ("Exiting " + self.name)
def process_data(threadName, q):
while not exitFlag:
queueLock.acquire()
if not workQueue.empty():
data = q.get()
queueLock.release()
print ("%s processing %s" % (threadName, data))
else:
queueLock.release()
time.sleep(1)
threadList = ["Thread-1", "Thread-2", "Thread-3"]
nameList = ["One", "Two", "Three", "Four", "Five"]
queueLock = threading.Lock()
workQueue = queue.Queue(10)
threads = []
threadID = 1
# Create new threads
for tName in threadList:
thread = myThread(threadID, tName, workQueue)
thread.start()
threads.append(thread)
threadID += 1
# Fill the queue
queueLock.acquire()
for word in nameList:
workQueue.put(word)
queueLock.release()
# Wait for queue to empty
while not workQueue.empty():
pass
# Notify threads it's time to exit
exitFlag = 1
# Wait for all threads to complete
for t in threads:
t.join()
print ("Exiting Main Thread")
Example 3: multithread python3
import timeimport threadingdef calc_square(number): print("Calculate square numbers: ") for i in numbers: time.sleep(0.2) #artificial time-delay print('square: ', str(n*n))def calc_cude(number): print("Calculate cude numbers: ") for i in numbers: time.sleep(0.2) print('cube: ', str(n*n*n))arr = [2,3,8,9]t = time.time()t1 = threading.Thread(target = cal_square,args=(arr,))t2 = threading.Thread(target = cal_cube,args=(arr,))# creating two threads here t1 & t2t1.start()t2.start()# starting threads here parallelly by usign start function.t1.join()# this join() will wait until the cal_square() function is finised.t2.join()# this join() will wait unit the cal_cube() function is finised.print("Successed!")