how to use multiple threads in python code example

Example 1: python running multiple threads at the same time

from threading import Thread
from time import sleep
# use Thread to run def in background
# Example:
def func1():
    while True:
        sleep(1)
        print("Working")

def func2():
    while True:
        sleep(2)
        print("Working2")

if __name__ == '__main__':
    Thread(target = func1).start()
    Thread(target = func2).start()

Example 2: how to run same function on multiple threads in pyhton

import multiprocessing

def worker(num):
    """ Worker procedure
    """
    print('Worker:', str(num))

# Mind the "if" instruction!
if __name__ == '__main__':
    jobs = [] # list of jobs
    jobs_num = 5 # number of workers
    for i in range(jobs_num):
        # Declare a new process and pass arguments to it
        p1 = multiprocessing.Process(target=worker, args=(i,))
        jobs.append(p1)
        # Declare a new process and pass arguments to it
        p2 = multiprocessing.Process(target=worker, args=(i+10,))
        jobs.append(p2)
        p1.start() # starting workers
        p2.start() # starting workers

Example 3: how to execute program with multithreading python

#!/usr/bin/python

import thread
import time

# Define a function for the thread
def print_time( threadName, delay):
   count = 0
   while count < 5:
      time.sleep(delay)
      count += 1
      print "%s: %s" % ( threadName, time.ctime(time.time()) )

# Create two threads as follows
try:
   thread.start_new_thread( print_time, ("Thread-1", 2, ) )
   thread.start_new_thread( print_time, ("Thread-2", 4, ) )
except:
   print "Error: unable to start thread"

while 1:
   pass

Example 4: multithreading python

class FakeDatabase:
    def __init__(self):
        self.value = 0
        self._lock = threading.Lock()

    def locked_update(self, name):
        logging.info("Thread %s: starting update", name)
        logging.debug("Thread %s about to lock", name)
        with self._lock:
            logging.debug("Thread %s has lock", name)
            local_copy = self.value
            local_copy += 1
            time.sleep(0.1)
            self.value = local_copy
            logging.debug("Thread %s about to release lock", name)
        logging.debug("Thread %s after release", name)
        logging.info("Thread %s: finishing update", name)