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I'm making a small program, I have 2 check boxes (text1 and text2). I want to append values (text1 and text2) to a List, If check boxes are checked. I want to print list [text1,text2]

from tkinter import *

myApp = Tk()
myApp.title("GUI app")
myApp.geometry("300x500")

List = []
varList = []

var1 = IntVar()
Checkbutton1 = Checkbutton(myApp, text="Text1", variable=var1,
                           onvalue=1, offvalue=0)
Checkbutton1.grid(row=0, column=1, sticky=W)

var2 = IntVar()
Checkbutton2=Checkbutton(myApp, text="Text2", variable=var2,
                         onvalue=1, offvalue=0)
Checkbutton2.grid(row=1, column=1,sticky=W)

varList.append(var1)
varList.append(var2)

def addtolist():
    for item in varList:
        if item.get() == 1:
            List.append(item)
            print(List)

b1 = Button(myApp, text="Add", command=addtolist)
b1.grid(row=1, column=2)

mainloop()
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2
  • Are yo trying to get the function to return [1,1], '1' being the value of the int that is both var1 and var2. Or are you trying to get the text of the checkbuttons in a list ["Text1", "Text2"]. Commented Nov 26, 2017 at 1:11
  • Im trying to return ["Text1", "Text2"]. But i want to make a lot of check boxes, so if the box is checked , it should return "name" of the checkbox (lets say that "name" is text1, or tex2 or .. text12.. and so on) Commented Nov 26, 2017 at 1:14

2 Answers 2

Reset to default
3

Use onvalue="Text", offvalue="" and var1 = StringVar() and then item.get() will return "Text" or empty string.

from tkinter import *

# --- functions ---

def addtolist():
    global List

    List = []
    for item in varList:
        if item.get() != "":
            List.append(item.get())
    print(List)

# --- main ---

List = []
varList = []

myApp = Tk()
myApp.title("GUI app")
myApp.geometry("300x500")

var1 = StringVar()
cb1 = Checkbutton(myApp, text="Text1", variable=var1,
                           onvalue="Text1", offvalue="")
cb1.grid(row=0, column=1, sticky=W)

var2 = StringVar()
cb2 = Checkbutton(myApp, text="Text2", variable=var2,
                         onvalue="Text2", offvalue="")
cb2.grid(row=1, column=1,sticky=W)

varList.append(var1)
varList.append(var2)

b1 = Button(myApp, text="Add", command=addtolist)
b1.grid(row=1, column=2)

mainloop()
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2 Comments

Hey, I have one question. What should I do, If I want to add that list in a textbox?
if you mean Text widget then it has method insert(position, text). You can use for loop to insert every item separatelly textbox.insert("end", item + "\n") or you can first create one string text = "\n".join(List) and then put it textbox.insert("end", text + "\n")
2

Modification of furas code to make it easier to create lists

from tkinter import *


def addtolist():
    global List

    List = []
    for item in varList:
        if item.get() != "":
            List.append(item.get())
    print(List)


List = []
varList = []
myApp = Tk()
myApp.title("GUI app")
myApp.geometry("300x500")


class Check:
    x = 0
    def __init__(self, lbl):
        self.var = StringVar()
        self.cb = Checkbutton(myApp, text=lbl, variable=self.var,
                              onvalue=lbl, offvalue="")
        self.cb.grid(row=Check.x, column=1, sticky=W)
        Check.x += 1
        varList.append(self.var)


Check("Paul Weller")
Check("Nancy Reagan")
Check("Richard Gere")

b1 = Button(myApp, text="Add", command=addtolist)
b1.grid(row=1, column=2)

enter image description here

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