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")import threading
import time
def thread_function(name):
print(f"Thread {name}: starting")
time.sleep(2)
print(f"Thread {name}: finishing")
my_thread = threading.Thread(target=thread_function, args=(1,))
my_thread.start()
time.sleep(1)
my_second_thread = threading.Thread(target=thread_function, args=(2,))
my_second_thread.start()
my_second_thread.join() # Wait until thread finishes to exit# Python program to illustrate the concept
# of threading
# importing the threading module
import threading
def print_cube(num):
"""
function to print cube of given num
"""
print("Cube: {}".format(num * num * num))
def print_square(num):
"""
function to print square of given num
"""
print("Square: {}".format(num * num))
if __name__ == "__main__":
# creating thread
t1 = threading.Thread(target=print_square, args=(10,))
t2 = threading.Thread(target=print_cube, args=(10,))
# starting thread 1
t1.start()
# starting thread 2
t2.start()
# wait until thread 1 is completely executed
t1.join()
# wait until thread 2 is completely executed
t2.join()
# both threads completely executed
print("Done!")import threading
from random import randint
from time import sleep
def print_number(number):
# Sleeps a random 1 to 10 seconds
rand_int_var = randint(1, 10)
sleep(rand_int_var)
print "Thread " + str(number) + " slept for " + str(rand_int_var) + " seconds"
thread_list = []
for i in range(1, 10):
# Instantiates the thread
# (i) does not make a sequence, so (i,)
t = threading.Thread(target=print_number, args=(i,))
# Sticks the thread in a list so that it remains accessible
thread_list.append(t)
# Starts threads
for thread in thread_list:
thread.start()
# This blocks the calling thread until the thread whose join() method is called is terminated.
# From http://docs.python.org/2/library/threading.html#thread-objects
for thread in thread_list:
thread.join()
# Demonstrates that the main process waited for threads to complete
print "Done"
#Python multithreading example to print current date.
#1. Define a subclass using threading.Thread class.
#2. Instantiate the subclass and trigger the thread.
import threading
import datetime
class myThread (threading.Thread):
def __init__(self, name, counter):
threading.Thread.__init__(self)
self.threadID = counter
self.name = name
self.counter = counter
def run(self):
print("\nStarting " + self.name)
print_date(self.name, self.counter)
print("Exiting " + self.name)
def print_date(threadName, counter):
datefields = []
today = datetime.date.today()
datefields.append(today)
print("{}[{}]: {}".format( threadName, counter, datefields[0] ))
# Create new threads
thread1 = myThread("Thread", 1)
thread2 = myThread("Thread", 2)
# Start new Threads
thread1.start()
thread2.start()
thread1.join()
thread2.join()
print("\nExiting the Program!!!")A thread is a separate flow of execution. This means that your program will have two things happening at once. But for most Python 3 implementations the different threads do not actually execute at the same time: they merely appear to.