threading

threading1.py

import time
from threading import Thread

def sleepytime(threads):
    print("Thread " + str(threads) + " going to sleep.\n")
    time.sleep(5)
    print("Thread " + str(threads) + " waking up.\n")

for threads in range(10):
    t = Thread(target=sleepytime, args=(threads,))
    t.start()

threading2.py

import time
from threading import Lock, Thread

balance= 0
lock = Lock()

def deposit(amount):
    global balance
    global lock
    print("Queued transaction...\n")
    lock.acquire()
    time.sleep(3)
    balance += amount
    print("Deposited:",str(amount),"Balance:",str(balance))
    lock.release()

a = Thread(target=deposit, args=(5,))
b = Thread(target=deposit, args=(10,))

a.start()
b.start()

threading3.py

import time
from threading import Lock, Thread

balance= 0
lock = Lock()

def deposit(amount):
    global balance
    global lock
    print("Queued transaction...\n")
    lock.acquire()
    time.sleep(3)
    balance += amount
    print("Deposited:",str(amount),"Balance:",str(balance))
    lock.release()

a = Thread(target=deposit, args=(5,))
b = Thread(target=deposit, args=(10,))

a.start()
b.start()

a.join() #allows waiting till finished
b.join() #allows waiting till finished

print("finished program execution.")