# threading.py

# threading.py

# fun challenge: list how many possible issues can time.sleep(seconds) cause

from Tkinter import Tk, Label, Button, StringVar
import time
import random
import threading

root = Tk()
root.title("Threading Test")
root.geometry("300x200")

class Cv(): 0
cv = Cv()

cv.list_of_threads = 0

def of_threads(n):
    cv.list_of_threads += n
    my_threads.config(text='Number Of Threads = '+str(cv.list_of_threads))

def five_seconds():
    my_label.config(text='Now Temporarily In This* Function...') # <<< ???
    of_threads(+1)
    print('!!!')
    time.sleep(5)
    of_threads(-1)
    if not cv.list_of_threads:
        my_label.config(text="Hello World !!!")
    print('...')

def random_number():
    rnd = str(random.randint(0,999999)).zfill(6)
    my_random.config(text='Random Number = '+rnd)
    print(rnd)

if __name__ == "__main__":
    my_label = Label(root, text="Hello World !!!")
    my_label.pack(pady=5)

    my_threads = Label(root, text="Number Of Processes = 0")
    my_threads.pack(pady=5)

    my_button_Z = Button(root, text="Pick Random Number",
        command=random_number, bg='yellow')
    my_button_Z.pack(pady=2,fill='x')

    my_button_A = Button(root, text="5 Seconds Without Threading",
        command=five_seconds, fg='white', bg='red')
    my_button_A.pack(pady=2,fill='x')

    my_button_B = Button(root, text="5 Seconds With Threading",
        command=lambda: threading.Thread(target=five_seconds).start(), bg='green')
    my_button_B.pack(pady=2,fill='x')

    my_random = Label(root, text="---")
    my_random.pack(pady=5)

    root.mainloop()