I am trying to create a function inside a class and with this function, I want to calculate how many checkboxes clicked.

# This function assesses number of clicked items in my class's list
    def badper(self):
        window=Tk()
        window.config(bg='lightgreen')
        # total = 0
        def show(self):
            new_label = Label(window, text=var.get()).pack()
        var=IntVar()
        def create_check_button(self,i):
            var = IntVar()
            c=Checkbutton(window,text=self.badcharacter[i],variable=var)
            c.pack()
            # if c == 1:
            #     global total
            #     total  = 1
        # This loop creates checkboxes in the equivalent of number items of my list
        for i in range(6):
            create_check_button(self,i)

        # This button should show how many items clicked so far
        my_button=Button(window,text="show", font=("Arial", 12, "bold"),command=show(self)).pack()

CodePudding user response：

This code achieves the correct outcome with the total number of set Checkbuttons displayed.

Remarks in code explain the problems in this simplified snippet.

import tkinter as tk

window = tk.Tk()
window.config(bg='lightgreen')

store_var = []

def show():
    total = 0
    # This is one way to display results
    for a in store_var:
        if a.get():
            total = total   1
    my_label["text"] = f"Total = {total}"

def create_check_button(i):
    var = tk.IntVar()
    # no information on badcharacter list supplied
    c = tk.Checkbutton(
        window, text = i, onvalue = 1, offvalue = 0, variable = var)
    c.pack()
    # Save each IntVar in list for use by function show()
    store_var.append(var)

for i in range(6):
    create_check_button(i)

# my_label is referenced in function show() so define my_label separately from pack
my_label = tk.Label(window, text = "Output")
my_label.pack()

# Button is not referenced anywhere so combining declaration and pack management is OK
tk.Button( window, text = "show", font = "Arial 12 bold", command = show).pack()

window.mainloop()

CodePudding user response：

Here the picture about my project I use stepI button in order to display checkbotton window

Thank you derek I am appreciated but when I clicked the show button The result shows "0"

I used the above answer in the program I saw that I could not change the result the total remained the same(0). So I tried different approach but this time I could not run checkbutton properly. The store_var displays either "000000" or "111111" (these numbers 0,1 related with item number in my list(i))

def badper(self):
    window=tk.Tk()
    window.geometry("300x300")
    window.config(bg='lightgreen')

    store_var= []

    def show():

        total = 0
        # This is one way to display results
        for a in store_var:
            if a.get():
                total = total   1
        my_label["text"] = f"Total = {total}"

    def create_check_button(i):
        var = tk.IntVar()
        # for i in self.badcharacter:

        c = tk.Checkbutton(window, text=i,onvalue=1,offvalue=0,variable=var)
        c.pack()
            # Save each IntVar in list for use by function show()
        store_var.append(var)




    for i in self.badcharacter:
        create_check_button(i)

    # my_label is referenced in function show() so define my_label separately from pack
    my_label = tk.Label(window, text="Output")
    my_label.pack()
    result = tk.Button(window,text="show",font=("Arial",12,"bold"),command=show).pack()
    window.mainloop()