Multithreading python,two tkinter windows

[Vindhyachal Takniki]

I have made a python code & using multithreading in it. this is very basic code, not using queues & other stuff.

1. Task is to create two independent Tkinter windows

2. Code has four files: 
main.py:creates individual thread
analog.py: generate random values every 1 sec & 10 sec
screen.py: Tkinter file, screen keeps on updating every 1 sec
scree2.py: Tkinter file, screen keeps on updating every 10 sec

3. My code never run on gives anything. However if in main.py, I disable, one of either screen thread, another screen works fine. i.e they don't work together 


main.py
[code]import thread
import time
import analog
import screen
import screen2

thread.start_new_thread(analog.get_analog_1 , ("Thread-1",))
thread.start_new_thread(analog.get_analog_2 , ("Thread-2",))
thread.start_new_thread(screen.display , ("Thread-3",))
thread.start_new_thread(screen2.display , ("Thread-4",))

while 1:
    pass

[/code]

analog.py
[code]import time
from random import randint


current_time_1 = time.time();
current_time_2 = time.time();
read_ok_1 = 0
read_ok_2 = 0
analog_1 = 0
analog_2 = 0


#get reading at every 1 second
def get_analog_1(thread_name):
    global read_ok_1, current_time_1,analog_1
    while True:
        if((time.time() - current_time_1) > 1):
            if(0 == read_ok_1):
                current_time_1 = time.time();
                read_ok_1 = 1;
                analog_1 = randint(0,100)
                
                
#get reading on update                
def read_update_analog_1():
    global read_ok_1,analog_1
    data1 = 0
    val1 = 0
    if(1 == read_ok_1):
        read_ok_1 = 0;
        data1 = 1;
        val1 = analog_1
        
    return data1,val1                

    
    
#get reading at every 10 second
def get_analog_2(thread_name):
    global read_ok_2, current_time_2,analog_2
    while True:
        if((time.time() - current_time_2) > 10):
            if(0 == read_ok_2):
                current_time_2 = time.time();
                read_ok_2 = 1;
                analog_2 = randint(0,100)
                
                
#get reading on update                
def read_update_analog_2():
    global read_ok_2,analog_2
    data2 = 0
    val2 = 0
    if(1 == read_ok_2):
        read_ok_2 = 0;
        data2 = 1;
        val2 = analog_2
        
    return data2,val2        


[/code]

screen.py
[code]
from Tkinter import *
import analog
import thread
import time

class App():
    
    def __init__(self, master):
        self.master = master

        frame = Frame(master)
        frame.pack()

        label = Label(frame , text = "Analog" , font = ("Helvetica",32))
        label.grid(row = 0)

        self.reading_label = Label(frame, text = '0.0' , font = ("Helvetica",70))
        self.reading_label.grid(row = 1)
        
        self.update_reading()

        

    def update_reading(self):        
        data1,val1 = analog.read_update_analog_1()
        if(1 == data1):
            reading_str = "{:.1f}".format(val1)
            self.reading_label.configure(text = reading_str)
        
        self.master.after(100 , self.update_reading)
        

def display(threadName):
    root = Tk()
    root.wm_title("Ammeter")
    app = App(root)
    root.geometry("480x320")
    root.mainloop()
[/code]

screen2.py
[code]from Tkinter import *
import analog
import thread
import time

class App():
    
    def __init__(self, master):
        self.master = master

        frame = Frame(master)
        frame.pack()

        label = Label(frame , text = "Analog" , font = ("Helvetica",32))
        label.grid(row = 0)

        self.reading_label = Label(frame, text = '0.0' , font = ("Helvetica",70))
        self.reading_label.grid(row = 1)

        self.update_reading()

        

    def update_reading(self):
    
        data1,val1 = analog.read_update_analog_2()
        if(1 == data1):
            reading_str = "{:.1f}".format(val1)
            self.reading_label.configure(text = reading_str)
        
        self.master.after(1000 , self.update_reading)
        

def display(threadName):
    root = Tk()
    root.wm_title("Voltmeter")
    app = App(root)
    root.geometry("480x320")
    root.mainloop()
[/code]