Functions are not Working in Python Tkinter?

Muhammad Asim :

I have Program in Python Tkinter in which I have made three rows of 10 Labels and a Start Button Below them. I have used for loops to display text in the Labels.

First Row of Labels only Display Headings.

On Second row of Label I have set the condition that if loops value modulus equals zero (a%2==0) it displays Labels text ON else OFF and this condition is opposite in third row of Label as shown below and in the code.

Finally on start button I have called a function that reveres the process that if loops variable value modulus 2 equals one then display labels text OFF on second row of Labels else ON. This process is opposite on third row of Labels. But the problem here is when I click on Start Button it only changes the last value of second and third row of Labels but I want to change all of them. I think the functions are not working properly as desired. Code is below.

from tkinter import *
import tkinter as tk

win = Tk()
win.title("Label")
win.geometry("800x600+50+50")
win.config(bg='white')

label1=Label(win, text="Label Status Changer", font=("Calibri",24,"bold"), bg='white', borderwidth=1, relief="solid", padx=20, pady=20) #"flat", "raised", "sunken", "ridge", "solid", and "groove"
label1.pack(pady=(15,60))


lblframe = tk.Frame(win)
for a1 in range(10):
    pre1=Label(lblframe, text=("LBL",(a1+1)), font=("Calibri",12, "bold"), bg="white", borderwidth=1, relief="solid", padx=5, pady=2)
    pre1.grid(row=0, column=a1)

for a2 in range(10):
    if ( a2%2 == 0 ):
        pre2=Label(lblframe, text="OFF", font=("Calibri",12,"bold"), bg="white", fg="Green", borderwidth=1, relief="solid", padx=11, pady=1)
        pre2.grid(row=1, column=a2, sticky="nw")
    else:
        pre2=Label(lblframe, text="ON", font=("Calibri",12,"bold"), bg="white", fg="Red", borderwidth=1, relief="solid", padx=11, pady=1)
        pre2.grid(row=1, column=a2, sticky="nw")

for a3 in range(10):
    if (a3%2 == 1):
        pre3=Label(lblframe, text="OFF", font=("Calibri",12,"bold"), bg="white", fg="Green", borderwidth=1, relief="solid", padx=11, pady=1)
        pre3.grid(row=2, column=a3, sticky="nw")
    else:
        pre3=Label(lblframe, text="ON", font=("Calibri",12,"bold"), bg="white", fg="Red", borderwidth=1, relief="solid", padx=11, pady=1)
        pre3.grid(row=2, column=a3, sticky="nw")

lblframe.pack()

def oldstatus():
    for a4 in range(10):
        if(a4%2==1):
            pre2.config(text="OFF")
        else:
            pre2.config(text="ON")

def newstatus():
    for a5 in range(10):
        if(a5%2==0):
            pre3.config(text="OFF")
        else:
            pre3.config(text="ON")

def statuschanger():
    oldstatus()
    newstatus()

#Button1
button1=Button(win,text="Start",width=10,height=2, font=("Calibri",16,"bold"), bg="black",fg="white", command=statuschanger)
button1.pack(pady=(30,0))

win.mainloop()

Output on Running Program

Output on Pressing Start Button

Kashif Iftikhar :

It works:

from tkinter import *
import tkinter as tk

win = Tk()
win.title("Label")
win.geometry("800x600+50+50")
win.config(bg='white')

label1=Label(win, text="Label Status Changer", font=("Calibri",24,"bold"), bg='white', borderwidth=1, relief="solid", padx=20, pady=20) #"flat", "raised", "sunken", "ridge", "solid", and "groove"
label1.pack(pady=(15,60))

list1=[]
list2=[]

lblframe = tk.Frame(win)
for a1 in range(10):
    pre1=Label(lblframe, text=("LBL",(a1+1)), font=("Calibri",12, "bold"), bg="white", borderwidth=1, relief="solid", padx=5, pady=2)
    pre1.grid(row=0, column=a1)

for l1 in range(10):
    if l1%2 ==0:
        list1.append(1)
    else:
        list1.append(0)

print(list1)
for l2 in range(10):
    if l2%2 ==1:
        list2.append(1)
    else:
        list2.append(0)
print(list2)

def mylabels():
    for a2 in range(10):
        if ( int(list1[a2])== 0 ):
            pre2=Label(lblframe, text="OFF", font=("Calibri",12,"bold"), bg="white", fg="Green", borderwidth=1, relief="solid", padx=11, pady=1)
            pre2.grid(row=1, column=a2, sticky="nw")
            #list1.append(pre2.cget("text"))
        else:
            pre2=Label(lblframe, text="ON", font=("Calibri",12,"bold"), bg="white", fg="Red", borderwidth=1, relief="solid", padx=11, pady=1)
            pre2.grid(row=1, column=a2, sticky="nw")
            #list1.append(pre2.cget("text"))

    for a3 in range(10):
        if (int(list2[a3])== 0):
            pre3=Label(lblframe, text="OFF", font=("Calibri",12,"bold"), bg="white", fg="Green", borderwidth=1, relief="solid", padx=11, pady=1)
            pre3.grid(row=2, column=a3, sticky="nw")
            #list2.append(pre3.cget("text"))
        else:
            pre3=Label(lblframe, text="ON", font=("Calibri",12,"bold"), bg="white", fg="Red", borderwidth=1, relief="solid", padx=11, pady=1)
            pre3.grid(row=2, column=a3, sticky="nw")
            #list2.append(pre3.cget("text"))

lblframe.pack()

mylabels()

def statuschanger():
    list1.clear()
    list2.clear()
    for l3 in range(10):
        if l3%2 ==1:
            list1.append(1)
        else:
            list1.append(0)

    for l4 in range(10):
        if l4%2 ==0:
            list2.append(1)
        else:
            list2.append(0)
    mylabels()


#Button1
button1=Button(win,text="Start",width=10,height=2, font=("Calibri",16,"bold"), bg="black",fg="white", command=statuschanger)
button1.pack(pady=(30,0))

win.mainloop()

Output on Running Programming

Output on Pressing start Button