access value from thread

threading.py

import threading
import Queue
import timeit

q = Queue.Queue()
number = 5

t1 = timeit.default_timer()
# Step1: For example, we are running multiple functions normally
result = []
def fun(x):
    result.append(x)
    return x

for i in range(number):
    fun(i)
print result ," # normal result"
print (timeit.default_timer() - t1)

t2 = timeit.default_timer()   

#Step2:  by using threads and queue

def fun_thrd(x,q):
    q.put(x)
    return
for i in range(number):
    t1 = threading.Thread(target = fun_thrd, args=(i,q))
    t1.start()
    t1.join()

thrd_result = []

while True:
    if not q.empty():
     thrd_result.append(q.get())
    else:
       break

print thrd_result , "# result with threads involved"
print (timeit.default_timer() - t2)

t3 = timeit.default_timer() 

#step :3 if you want thread to be run without depending on the previous thread

threads = []

def fun_thrd_independent(x,q):
    q.put(x)
    return

def thread_indep(number):
    for i in range(number):
        t = threading.Thread(target = fun_thrd_independent, args=(i,q))
        t.start()
        threads.append(t)

thread_indep(5)

for j in threads:
    j.join()

thread_indep_result = []

while True:
    if not q.empty():
        thread_indep_result.append(q.get())
    else:
       break

print thread_indep_result # result when threads are independent on each other   
print (timeit.default_timer() - t3)