usage of thread in python

1import threading
2
3def worker(argument):
4    print(argument)
5    return
6
7for i in range(5):
8    t = threading.Thread(target=worker, args=[i])
9    t.start()

1import threading
2import time
3
4def thread_function(name):
5     print(f"Thread {name}: starting")
6     time.sleep(2)
7     print(f"Thread {name}: finishing")
8 
9my_thread = threading.Thread(target=thread_function, args=(1,))
10my_thread.start()
11time.sleep(1)
12my_second_thread = threading.Thread(target=thread_function, args=(2,))
13my_second_thread.start()
14my_second_thread.join() # Wait until thread finishes to exit

1import threading
2from random import randint
3from time import sleep
4
5
6def print_number(number):
7
8    # Sleeps a random 1 to 10 seconds
9    rand_int_var = randint(1, 10)
10    sleep(rand_int_var)
11    print "Thread " + str(number) + " slept for " + str(rand_int_var) + " seconds"
12
13thread_list = []
14
15for i in range(1, 10):
16
17    # Instantiates the thread
18    # (i) does not make a sequence, so (i,)
19    t = threading.Thread(target=print_number, args=(i,))
20    # Sticks the thread in a list so that it remains accessible
21    thread_list.append(t)
22
23# Starts threads
24for thread in thread_list:
25    thread.start()
26
27# This blocks the calling thread until the thread whose join() method is called is terminated.
28# From http://docs.python.org/2/library/threading.html#thread-objects
29for thread in thread_list:
30    thread.join()
31
32# Demonstrates that the main process waited for threads to complete
33print "Done"
34