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Back Page Button on Tkinter won't

I'm trying to incorporate a 'back button' in my Tkinter app in my 'second_home' to allow the user to return to the previous page - from second_home to home. I've incorporated a hide_frames() function to allow all the frames to disappear when called. I have this done on the second_home but I've commented out the function on the home function - the app won't run with the function called. I also have the home function called when launching the app.
When clicking on the back button titled "Previous Page" I receive the error 'TclError: bad window path name ".!labelframe.!canvas'
from tkinter import *
from tkinter import ttk
from tkinter.font import BOLD
win = Tk()
# Creating Frames
wrapper1 = LabelFrame(win, width = 900, height = 950)
wrapper2 = LabelFrame(win, width = 900, height = 950)
wrapper3 = LabelFrame(win, width = 900, height = 950)
wrapper4 = LabelFrame(win, width = 900, height = 950)
mycanvas = Canvas(wrapper1)
mycanvas.pack(side = LEFT, fill = "both", expand ="yes")
# Creating a Hide Frame Function
def hide_frames():
# Destroying the widgets in each frame
for widget in wrapper1.winfo_children():
widget.destroy()
for widget in wrapper2.winfo_children():
widget.destroy()
for widget in wrapper3.winfo_children():
widget.destroy()
for widget in wrapper4.winfo_children():
widget.destroy()
# Hiding all frames
wrapper1.pack_forget()
wrapper2.pack_forget()
wrapper3.pack_forget()
wrapper4.pack_forget()
def home():
#hide_menu_frames()
global myframe
myframe = Frame(mycanvas)
mycanvas.create_window((0,0), window = myframe, anchor = "nw")
wrapper1.pack(fill = "both", expand = "yes", padx = 10, pady = 10)
myframe.pack(fill = "both", expand = 1)
start_label = Label(myframe, text = "Choose Length of Loan Model", font = ("Helvetica", 19)).pack(pady = 100)
# Creating buttons
home_button1 = Button(myframe, text = "12 Month Model", bg='#ffffff', activeforeground='#4444ff', font = ("Helvetica", 16, BOLD), command = second_home).pack(pady = 10)
def second_home():
hide_frames()
mycanvas = Canvas(wrapper2)
mycanvas.pack(side = LEFT, fill = "both", expand ="yes")
yscrollbar = ttk.Scrollbar(wrapper2, orient = VERTICAL, command = mycanvas.yview)
yscrollbar.pack(side = RIGHT, fill = "y")
mycanvas.configure(yscrollcommand = yscrollbar.set)
mycanvas.bind('<Configure>',lambda e: mycanvas.configure(scrollregion = mycanvas.bbox('all')))
wrapper2.pack(fill = "both", expand = "yes", padx = 10, pady = 10)
myframe = Frame(mycanvas)
mycanvas.create_window((0,0), window = myframe, anchor = "nw")
second_label = Label(myframe, text = "Please Input Loan Parameters", font = ("Helvetica", 18), pady = 10, padx = 325).pack()
# Creating a Back Button
back_button = Button(myframe, text = "Previous Page", command = home)
back_button.pack(pady = 10)
# Defining a Main Menu
my_menu = Menu(win)
win.config(menu = my_menu)
# Creating Menu Items
app_menu = Menu(my_menu)
my_menu.add_cascade(label = "Options", menu = app_menu)
app_menu.add_command(label = "Home", command = home)
app_menu.add_separator()
app_menu.add_command(label = "Exit", command = win.quit)
win.geometry("900x950")
#win.resizable(False, False)
win.title("Loan Cash Flow Model Creator")
home()
win.mainloop()

How to implement a scrollbar to grid in tkinter

I have a hard time implementing a scrollbar into my Tkinter project. I've been through numerous articles and answered questions on how to implement a scrollbar, but I'm just unable to implement a working solution after an entire day of researching this one 'simple' matter.
My current code looks like this:
import tkinter as tk
from tkinter import Button, ttk
from PIL import ImageTk, Image
from functools import partial
import queue as qu
import math
import re
import os
window = tk.Tk()
queue = qu.Queue()
#Basic values
#the window size
windowSize = "700x1000"
#picture and container size
x, y = 200, 300
#tmp
sidepanelsize = 200
window.geometry(windowSize)
#button identifier
def change(i):
print(I)
#temporary content generator
for g in range(12):
for item in os.listdir("."):
if re.search(r"\.(jpg|png)$", item):
queue.put(item)
n = queue.qsize()
#other panels that are going to be used later
frameLeft = tk.Frame(master=window, width=sidepanelsize, relief=tk.RIDGE)
frameLeft.pack(fill=tk.Y, side=tk.LEFT)
label1 = tk.Label(master=frameLeft, text="Left Panel")
label1.pack()
buttonLeft1 = tk.Button(master=frameLeft, text="Button 1", command=lambda: print("I'm a side button!"))
buttonLeft1.pack()
frameMain = tk.Frame(master=window, relief=tk.GROOVE, borderwidth=1)
frameMain.pack(side=tk.TOP, fill=tk.X, expand=1)
# SCROLLBAR IF YOU DISABLE THIS SECTION AND PUTS SOME PICTURES IN THE FOLDER WHITH THE FILE THE CODE WORKS #
myCanvas = tk.Canvas(master=frameMain)
myCanvas.pack(side=tk.LEFT, fill=tk.BOTH, expand=1)
myScrollbar = ttk.Scrollbar(master=frameMain, orient=tk.VERTICAL, command=myCanvas.yview)
myScrollbar.pack(side=tk.RIGHT, fill=tk.Y)
myCanvas.configure(yscrollcommand=myScrollbar.set)
myCanvas.bind('<Configure>', lambda e: myCanvas.configure(scrollregion=myCanvas.bbox("all")))
secondFrame = tk.Frame(master=myCanvas)
myCanvas.create_window((0, 0), window=secondFrame, anchor=tk.NW)
############################ END OF SCROLLBAR ############################
noOfImgPerRow = math.floor((int(windowSize.split("x")[0])-sidepanelsize+100)/x)
imgs = []
#generates the grid
for i in range(n):
o = i
i = (o % noOfImgPerRow) + 1
j = math.floor(o/noOfImgPerRow) + 1
frameMain.columnconfigure(i, weight = 1, minsize=x+15)
frameMain.rowconfigure(i, weight = 1, minsize=y+50)
frameBox = tk.Frame(
master=frameMain,
relief=tk.RAISED,
borderwidth=1,
width = x,
height = y
)
# here the error references to
frameBox.grid(row=j, column=i, padx=5, pady=5)
img = Image.open(queue.get()).convert("RGBA")
width, height = img.size
if width/x >= height/y:
left = width/2-(round((height*x)/y))/2
right = width/2+(round((height*x)/y))/2
upper = 0
lower = height
else:
left = 0
right = width
upper = height/2-(round((width*y)/x))/2
lower = height/2+(round((width*y)/x))/2
img2 = img.crop([left, upper, right, lower])
img2 = img2.resize((x, y), Image.Resampling.LANCZOS)
imgs.append(ImageTk.PhotoImage(img2))
label = tk.Label(master = frameBox, image = imgs[-1])
label.pack()
mainButton = Button(master=frameBox, text="Start", command=partial(change, o))
mainButton.pack()
window.mainloop()
I've tried to highlight the only thing of concern, that being the scrollbar, everything else is working at the moment, I just wanted to post the whole code for better understanding if it would help in any way.
My problem is whenever I implement the scrollbar, it throws back an error stating:
Traceback (most recent call last):
File "e:\Python\starter\main.py", line 85, in <module>
frameBox.grid(row=j, column=i, padx=5, pady=5)
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.1264.0_x64__qbz5n2kfra8p0\lib\tkinter\__init__.py", line 2522, in grid_configure
self.tk.call(
_tkinter.TclError: cannot use geometry manager grid inside .!frame2 which already has slaves managed by pack
This error seems pretty self-explanatory, just grid the canvas instead of packing it, but when after a lot of small tweaking and doing things a roundabouts things
My second thought was if it has a problem with the grid to wrap the gridded frame in another bigger packed frame, like so:
yetAnotherFrame = tk.Frame(frameMain)
yetAnotherFrame.pack()
noOfImgPerRow = math.floor((int(windowSize.split("x")[0])-sidepanelsize+100)/x)
imgs = []
for i in range(n):
o = i
i = (o % noOfImgPerRow) + 1
j = math.floor(o/noOfImgPerRow) + 1
yetAnotherFrame.columnconfigure(i, weight = 1, minsize=x+15)
yetAnotherFrame.rowconfigure(i, weight = 1, minsize=y+50)
frameBox = tk.Frame(
master=yetAnotherFrame,
relief=tk.RAISED,
borderwidth=1,
width = x,
height = y
)
frameBox.grid(row=j, column=i, padx=5, pady=5)
This actually runs to my surprise, but the scrollbar still isn't working and the layout is broken again.

Solution
In your code frameBox's parent is frameMain. Instead you need to have the canvas as parent or the secondFrame which have the canvas as its parent.
Example
This is basically your code with fixes, but some of the unnecessary parts are removed.
import tkinter as tk
from tkinter import ttk
window = tk.Tk()
window.geometry("400x400")
frameLeft = tk.Frame(master=window, width=400, height=400, relief=tk.RIDGE)
frameLeft.pack(fill=tk.Y, side=tk.LEFT)
myCanvas = tk.Canvas(master=frameLeft)
myCanvas.pack(side=tk.LEFT, fill=tk.BOTH, expand=1)
myScrollbar = ttk.Scrollbar(master=frameLeft, orient=tk.VERTICAL, command=myCanvas.yview)
myScrollbar.pack(side=tk.RIGHT, fill=tk.Y)
myCanvas.configure(yscrollcommand=myScrollbar.set)
myCanvas.bind('<Configure>', lambda e: myCanvas.configure(scrollregion=myCanvas.bbox("all")))
secondFrame = tk.Frame(master=myCanvas)
myCanvas.create_window((0, 0), window=secondFrame, anchor=tk.NW)
for i in range(100):
lbl = tk.Label(secondFrame, text=f"Label {i}")
lbl.grid(column=0, row=i, sticky=tk.W)
window.mainloop()

Creating and Getting values from tkinter check boxes using for loop

This code is a part of my project in which I have to manage the attendance of 50 (or more) students.
The thing I want is that all the checkboxes should initially be 'checked' (showing the present state) and when I uncheck random checkboxes (to mark the absent) and click the Submit button (yet to be created at the bottom of the window), I should get a list with 'entered date' as first element and the roll numbers i.e. 2018-MC-XX as other elements.
For example: ['01/08/2020', '2018-MC-7', '2018-MC-11', '2018-MC-23', '2018-MC-44']
Actually my plan is when I will get a list I will easily write it to a text file. Also, if there is another way of creating multiple scrollable checkboxes without packing them inside a canvas then please do tell!
from tkinter import *
from tkcalendar import DateEntry
root = Tk()
root.geometry('920x600+270+50')
root.minsize(920,600)
Attendance_frame = Frame(root) ### Consider it a Main Frame
Attendance_frame.pack()
attendaceBox = LabelFrame(Attendance_frame, text = 'Take Attendance', bd = 4, relief = GROOVE, labelanchor = 'n',font = 'Arial 10 bold', fg = 'navy blue', width = 850, height = 525) # A Label Frame inside the main frame
attendaceBox.pack_propagate(0)
attendaceBox.pack(pady = 15)
dateFrame = Frame(attendaceBox) # A small frame to accommodate date entry label & entry box
dateFrame.pack(anchor = 'w')
font = 'TkDefaultFont 10 bold'
date_label = Label(dateFrame, text = 'Enter Date : ', font = font).grid(row = 0, column = 0, sticky = 'w', padx = 10, pady = 10)
date_entry = DateEntry(dateFrame, date_pattern = 'dd/mm/yyyy', showweeknumbers = FALSE, showothermonthdays = FALSE)
date_entry.grid(row = 0, column = 1, sticky = 'w')
noteLabel = Label(attendaceBox, text = 'Note: Uncheck the boxes for absentees').pack(anchor = 'w', padx = 10, pady = 5)
canvas = Canvas(attendaceBox, borderwidth=0, background="#ffffff")
checkFrame = Frame(canvas, width = 100, height = 50)
vsb = Scrollbar(canvas, orient="vertical", command=canvas.yview)
canvas.configure(yscrollcommand=vsb.set)
vsb.pack(side="right", fill="y")
canvas.pack(side="left", fill="both", expand=True)
canvas.pack_propagate(0)
canvas.create_window((4,4), window=checkFrame, anchor="nw")
def onFrameConfigure(canvas):
'''Reset the scroll region to encompass the inner frame'''
canvas.configure(scrollregion=canvas.bbox("all"))
checkFrame.bind("<Configure>", lambda event, canvas=canvas: onFrameConfigure(canvas))
for i in range(0,51): # A loop to create Labels of students roll numbers & names
c = Checkbutton(checkFrame, text = f"{'2018-MC-'+str(i+1)} Student {i+1}")
c.grid(row = i, column = 0, padx = 10, sticky = 'w')
mainloop()

First you need StringVar for each Checkbutton in order to get the state of the Checkbuttons later. Then you can use a list to hold the StringVars so that you can access them later. You can set the onvalue of the checkbuttons to the roll number associated to them.
Also you can use Text widget instead of Canvas+Frame. Below is an example:
import tkinter as tk
root = tk.Tk()
frame = tk.Frame(root)
frame.pack()
text = tk.Text(frame, width=40, height=20)
text.pack(side=tk.LEFT, fill=tk.BOTH)
vars = []
for i in range(51):
rollnum = '2018-MC-'+str(i+1)
var = tk.StringVar(value=rollnum)
cb = tk.Checkbutton(text, text=rollnum, variable=var, onvalue=rollnum, offvalue='', bg='white')
text.window_create('end', window=cb)
text.insert('end', '\n')
vars.append(var)
vsb = tk.Scrollbar(frame, orient=tk.VERTICAL, command=text.yview)
vsb.pack(side=tk.RIGHT, fill=tk.Y)
text.config(yscrollcommand=vsb.set)
def submit():
# extract roll numbers for checked checkbuttons
result = [var.get() for var in vars if var.get()]
print(result)
tk.Button(root, text='Submit', command=submit).pack()
root.mainloop()

Cannot make that scroll bar shows frame untill the bottom

I am trying to create a pop up help window for a tool. I managed to add the scrollbar to a frame that contains canvas and label widget. However that Scrollbar does not shows the img_canvas_3 that I added.
Here is my code:
from tkinter import *
import tkinter.filedialog
from tkinter.filedialog import askopenfilename
from tkinter.filedialog import askdirectory
import PIL
from PIL import Image, ImageTk
help_window = tkinter.Tk()
help_window.title("Help")
help_window.geometry("400x800")
#frame.grid(row=0,column=0)
canvas=Canvas(help_window,bg='red',width=300,height=800,scrollregion=(0,0,500,500))
scroll_y = Scrollbar(help_window, orient="vertical", command = canvas.yview)
frame=Frame(canvas,width=300,height=800, bg="green")
description_label = Label(frame, text = "\n\tMy Tool\n",anchor = "w").pack(side = TOP, fill = "both")
introduction = "This tool provides a basic workflow"
introduction_text = Label(frame, text = introduction, anchor = "w", font = "Verdana 10", bg="yellow").pack(fill = "both")
label_1 = Label(frame, text = "Input Data 1", anchor = "w", font = "Verdana 10", justify=CENTER).pack(fill = "both")
img_canvas_1 = Canvas(frame, bg = "black", height = 300, width = 300)
img_canvas_1.pack(side = TOP)
label_2 = Label(frame, text = "Input Data 2", anchor = "w", font = "Verdana 10", justify = CENTER).pack(fill = "both")
img_canvas_2 = Canvas(frame, bg = "black", height = 300, width = 300)
img_canvas_2.pack(side = TOP)
label_3 = Label(frame, text = "Input Data 3", anchor = "w", font = "Verdana 10", justify = CENTER).pack(fill = "both")
img_canvas_3 = Canvas(frame, bg = "black", height = 300, width = 300)
img_canvas_3.pack(side = TOP)
canvas.create_window(0, 0, anchor = 'nw', window = frame)
canvas.update_idletasks
canvas.configure(scrollregion=canvas.bbox('all'),
yscrollcommand = scroll_y.set)
canvas.pack(fill = 'both', expand = TRUE, side = 'left')
scroll_y.pack(fill = 'y', side = 'right')
help_window.mainloop()
I expected to have the scroll bar working, basically showing all the widgets and elements in the frame as I am adding more and more. That is only true for the untill img_canvas_2
Does anyone have an idea why this is not the case with my code? I tried by playing around with the scrollregion parameter in the canvas variable, but it did not work.
Thanks in advance.

tkinter frames not showing the widgets

from tkinter import *
import tkinter.messagebox
def message():
text='''sfjkasjdfkjasdfjsdjfjsdlfjasd
fjsdkfjksadjfsajdjfl
sdfasdjflsjdlfsldjflsjd'''
tkinter.messagebox.showinfo("showing",text)
def _price_inputs():
win2 = Tk()
win2.title("Transactions for the project Botique")
win2.geometry("1600x800+0+0")
win2.configure(bg="black")
framex = Frame(win2,width=1600,bg="RoyalBlue4",height=100,relief=GROOVE).pack(side=TOP)
frame1 = Frame(win2,width=1000, height=400,bg="white", relief=SUNKEN).pack(side=RIGHT,fill=Y)
frame2 = Frame(win2, width=775,height=100,bg="white", relief=FLAT).pack(side=BOTTOM)
frame3 = Frame(win2,width=600,height=430,bg="gray",relief=FLAT).pack(side=LEFT,fill=X)
#framex == heading
#frame1 == showing the infos
#frame2 == bottom_infos
#frme3 == adding the buttons and widgets
#==++++===========================title=============================
lbl1 = Label(framex,font=("arial", 30, "bold"),bg="powder blue",fg="green",text="Hello this is the title of the page",bd=10,relief=GROOVE).pack(side=TOP)
btn1 = Button(frame1,font=("arial",20,"bold"),bg="powder blue",fg="white",text="click me").pack()
win2.mainloop()
I am trying to create the gui with tkinter.I am using python3.6
I made frames using tkinter and now when i try to add buttons , Labels etc it doesen't show the buttons or Labels in the output screen.
And how to i use pack for frames and grid for widgets in that frame using the pack.

You haven't call function in which you have defined properties. Just call function by adding _price_inputs() to your code at last:
from tkinter import *
import tkinter.messagebox
def message():
text='''sfjkasjdfkjasdfjsdjfjsdlfjasd
fjsdkfjksadjfsajdjfl
sdfasdjflsjdlfsldjflsjd'''
tkinter.messagebox.showinfo("showing",text)
def _price_inputs():
win2 = Tk()
win2.title("Transactions for the project Botique")
win2.geometry("1600x800+0+0")
win2.configure(bg="black")
framex = Frame(win2,width=1600,bg="RoyalBlue4",height=100,relief=GROOVE).pack(side=TOP)
frame1 = Frame(win2,width=1000, height=400,bg="white", relief=SUNKEN).pack(side=RIGHT,fill=Y)
frame2 = Frame(win2, width=775,height=100,bg="white", relief=FLAT).pack(side=BOTTOM)
frame3 = Frame(win2,width=600,height=430,bg="gray",relief=FLAT).pack(side=LEFT,fill=X)
#framex == heading
#frame1 == showing the infos
#frame2 == bottom_infos
#frme3 == adding the buttons and widgets
#==++++===========================title=============================
lbl1 = Label(framex,font=("arial", 30, "bold"),bg="powder blue",fg="green",text="Hello this is the title of the page",bd=10,relief=GROOVE).pack(side=TOP)
btn1 = Button(frame1,font=("arial",20,"bold"),bg="powder blue",fg="white",text="click me").pack()
win2.mainloop()
_price_inputs()

You can't see new items, lbl1 and btn1 as they're:
Children to win2, not any frames
Blocked by another frame, frame3
1
lbl1 and btn1 are children to win2, because passing None as the first positional argument or by default, the widget's parent is assigned as the Tk instance.
lbl1 and btn1 are instantiated with parent arguments as None, because:
framex = Frame(win2,width=1600,bg="RoyalBlue4",height=100,relief=GROOVE).pack(side=TOP)
...
frame1 = Frame(win2,width=600,height=430,bg="red",relief=FLAT).pack(side=LEFT,fill=X)
lines are identical to that of:
Frame(win2,width=1600,bg="RoyalBlue4",height=100,relief=GROOVE).pack(side=TOP)
framex = None
...
Frame(win2,width=600,height=430,bg="red",relief=FLAT).pack(side=LEFT,fill=X)
frame1 = None
Because both framex and frame3 are the return of the method pack which is always None.
One could fix this by separating the geometry manager line with the widget instantiation line:
framex = Frame(win2,width=1600,bg="RoyalBlue4",height=100,relief=GROOVE)
framex.pack(side=TOP)
...
frame1 = Frame(win2,width=600,height=430,bg="red",relief=FLAT)
frame1.pack(side=LEFT,fill=X)
2
Comment out frame3 line to see that lbl1 and btn1 actually exists:
#frame3 = Frame(win2,width=600,height=430,bg="red",relief=FLAT).pack(side=LEFT,fill=X)

from tkinter import *
import tkinter.messagebox
"""def message():
text='''sfjkasjdfkjasdfjsdjfjsdlfjasd
fjsdkfjksadjfsajdjfl
sdfasdjflsjdlfsldjflsjd'''
tkinter.messagebox.showinfo("showing",text)"""
def _price_inputs():
win2 = Tk()
win2.title("Transactions for the project Botique")
win2.geometry("1600x800+0+0")
win2.configure(bg="white")
framex = Frame(win2,width=1600,bg="RoyalBlue4",height=100,relief=GROOVE).pack(side=TOP)
#frame1 = Frame(win2,width=1000, height=400,bg="white", relief=SUNKEN).pack(side=RIGHT,fill=Y)
frame2 = Frame(win2, width=775,height=100,bg="black", relief=FLAT).pack(side=BOTTOM)
frame3 = Frame(win2,width=800,height=450,bg="gray",relief=FLAT).pack(side=LEFT,fill=X)
#framex == heading
#frame1 == showing the infos
#frame2 == bottom_infos
#frme3 == adding the buttons and widgets
#==++++===========================title=============================
lbl1 = Label(framex,font=("arial", 30, "bold"),bg="black",fg="green",text="Hello this is the title of the page",bd=10,relief=GROOVE).pack(side=TOP)
btn1 = Button(frame3,font=("arial",15,"bold"),bd=8,bg="black",fg="white",text="before 60 hrs",relief=GROOVE).pack(side=BOTTOM)
btn2 = Button(frame3,font=("arial",15,"bold"),bd=8,bg="black",fg="white",text="full_stock",relief=GROOVE).pack(side=BOTTOM)
btn3 = Button(frame3,font=("arial",15,"bold"),bd=8,bg="black",fg="white",text="delivery_report",relief=GROOVE).pack(side=BOTTOM)
before = IntVar()
stock_full = IntVar()
delivery_report = IntVar()
btn4 = Button(win2,font=("arial",15,"bold"),bd=8,bg="black",fg="white",text="hello",relief=GROOVE).pack(side=BOTTOM)
'''import Tkinter as tk
import ImageTk
FILENAME = 'image.png'
root = tk.Tk()
canvas = tk.Canvas(root, width=250, height=250)
canvas.pack()
tk_img = ImageTk.PhotoImage(file = FILENAME)
canvas.create_image(125, 125, image=tk_img)
quit_button = tk.Button(root, text = "Quit", command = root.quit, anchor = 'w',
width = 10, activebackground = "#33B5E5")
quit_button_window = canvas.create_window(10, 10, anchor='nw', window=quit_button)
root.mainloop()
'''
win2.mainloop()