Destroy Function Not Destroying A Frame Efficiently After The First Iteration In Tkinter Python

I have built a code that saves the calculated data at every iteration in a for loop and the results are stored in 3 different csv files. These saved results are read in another pyt

Solution 1:

I found a way that solves this problem. However, a new problem arises ..

Basically, I was defining frame1 inside the MVs function. I removed that and kept it only at the beginning. The same approach was done for frame2 and frame3. This way, when I press the close button, the respective frame is immediately closed. However, now when I have closed frame1 for instance, when I press the MVs button again, the frame1 is NOT opening again. It is giving me an error:

_tkinter.TclError: bad window path name ".!labelframe"

If I don't press the close button, this problem does not happen. Hence, the problem is definitely from destroying and closing the frames.

I have attached my edited code here:

import random
from tkinter import*
import tkinter as tk
import csv
import numpy as np
import time
base = tk.Tk()
base.geometry("500x300")



frame1 = tk.LabelFrame(base, text="MVs ", width=240, height=330, bd=15)
frame1.grid(row=1, column=0,  padx=8)


frame2 = tk.LabelFrame(base, text="CVs ", width=240, height=330, bd=15)
frame2.grid(row=1, column=3,  padx=8)

frame3 = tk.LabelFrame(base, text="DVs ", width=240, height=330, bd=15)
frame3.grid(row=1, column=5,  padx=8)


z=FalsedefMVs():
    #read files from saved excel sheetsglobal z
    global frame1

    if z==True:

        frame1 = tk.LabelFrame(base, text="MVs", width=240, height=330, bd=15)

        frame1.grid(row=1, column=0,  padx=8)

    MV=np.empty(8)

    withopen("MVs.csv","r") as csv_file:

        count=0

        csv_reader=csv.reader(csv_file)
        for row in csv_reader:
            i=row[0]#change from string to float type
            MV[count]=i #update y array
            count +=1# increment of 1 to get the number of total values

        MV=MV.reshape(8,1)


    #Display row titlesdefexit_btn():

        z=True
        frame1.destroy()
        frame1.update()

    if z==False:

        Label(frame1,text="Tc Measured").grid(column=0,columnspan=1,row=2,rowspan=1, sticky=W)
        Label(frame1,text="Tc Optimum").grid(column=0,columnspan=1,row=3,rowspan=1, sticky=W)
        Label(frame1,text="Tc Cost").grid(column=0,columnspan=1,row=4,rowspan=1, sticky=W)
        Label(frame1,text="Tc Weight").grid(column=0,columnspan=1,row=5,rowspan=1, sticky=W)

        Label(frame1,text="Q Measured").grid(column=0,columnspan=1,row=6,rowspan=1, sticky=W)
        Label(frame1,text="Q Optimum").grid(column=0,columnspan=1,row=7,rowspan=1, sticky=W)
        Label(frame1,text="Q Cost").grid(column=0,columnspan=1,row=8,rowspan=1, sticky=W)
        Label(frame1,text="Q Weight").grid(column=0,columnspan=1,row=9,rowspan=1, sticky=W)

        for i inrange(8):
            Label(frame1,text= str(round(MV[i,0],5))).grid(column=1 ,columnspan=1,row=i+2,rowspan=1, sticky=W)

        btn1_c=Button(frame1,text="Close",command=exit_btn).grid(column=1,columnspan=1,row=10,rowspan=1, sticky=W)

defCVs():

    global z
    global frame2

    if z==True:

        frame2 = tk.LabelFrame(base, text="CVs", width=240, height=330, bd=15)

        frame2.grid(row=1, column=3,  padx=8)

    CV=np.empty(8)

    withopen("CVs.csv","r") as csv_file:

        count=0

        csv_reader=csv.reader(csv_file)
        for row in csv_reader:
            i=row[0]#change from string to float type
            CV[count]=i #update y array
            count +=1# increment of 1 to get the number of total values

        CV=CV.reshape(8,1)

    #frame2 = tk.LabelFrame(base, text="CVs", width=240, height=330, bd=15)#frame2.grid(row=1, column=3,  padx=8)defexit_btn():

        z=True
        frame2.destroy()
        frame2.update()

    #Display row titles

    Label(frame2,text="T Measured").grid(column=3,columnspan=1,row=2,rowspan=1, sticky=W)
    Label(frame2,text="T Optimum").grid(column=3,columnspan=1,row=3,rowspan=1, sticky=W)
    Label(frame2,text="T Revenue").grid(column=3,columnspan=1,row=4,rowspan=1, sticky=W)
    Label(frame2,text="T Weight").grid(column=3,columnspan=1,row=5,rowspan=1, sticky=W)

    Label(frame2,text="Ca Measured").grid(column=3,columnspan=1,row=6,rowspan=1, sticky=W)
    Label(frame2,text="Ca Optimum").grid(column=3,columnspan=1,row=7,rowspan=1, sticky=W)
    Label(frame2,text="Ca Revenue").grid(column=3,columnspan=1,row=8,rowspan=1, sticky=W)
    Label(frame2,text="Ca Weight").grid(column=3,columnspan=1,row=9,rowspan=1, sticky=W)

    for i inrange(8):
        Label(frame2,text= str(round(CV[i,0],5))).grid(column=4 ,columnspan=1,row=i+2,rowspan=1, sticky=W)

    btn2_c=Button(frame2,text="Close",command=exit_btn).grid(column=3,columnspan=1,row=10,rowspan=1, sticky=W)   

defDVs():

    dist=np.empty(1)

    withopen("disturbance.csv","r") as csv_file:

        count=0

        csv_reader=csv.reader(csv_file)
        for row in csv_reader:
            i=row[0]#change from string to float type
            dist[count]=i #update y array
            count +=1# increment of 1 to get the number of total values

        dist=dist.reshape(1,1)

    #frame3 = tk.LabelFrame(base, text="DVs ", width=240, height=330, bd=15)#frame3.grid(row=1, column=5,  padx=8)defexit_btn():

        frame3.destroy()
        frame3.update()

    btn3_c=Button(frame3,text="Close",command=exit_btn).grid(column=5,columnspan=1,row=3,rowspan=1, sticky=W)    
    Label(frame3,text="Q Loss").grid(column=5,columnspan=1,row=2,rowspan=1, sticky=W)
    Label(frame3,text= str(round(dist[0,0],3))).grid(column=6 ,columnspan=1,row=2,rowspan=1, sticky=W)


btn1=Button(base,text='MVs',command=MVs)
btn2=Button(base,text='CVs',command=CVs)
btn3=Button(base,text='DVs',command=DVs)

btn1.grid(row=0,column=0)
btn2.grid(row=0,column=3)
btn3.grid(row=0,column=5)


i=0
show=True#show resultswhile(show==True):

    #base.after(i, MVs) #in ms
    frame1.after(i, MVs)
    #frame1.after(i+100,frame1.destroy)#base.after(i, CVs) #in ms
    frame2.after(i, CVs)
    #frame2.after(i+100,frame2.destroy)#base.after(i, DVs) #in ms
    frame3.after(i, DVs)
    #frame3.after(i+100,frame3.destroy)

    base.update()#update display

    i=i+3000

base.mainloop()