python - How to fix the problem when the Tk window does not apply changes in the code, only the default window - Stack Overflow

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I did my homework from the textbook (easy currency converter), wrote everything as in the assignment, but the Tk window does not change at all, only the usual default Tk window

from tkinter import *

root = Tk()
root.mainloop()
root.geometry("250x130")
root.title("Конвертер")

currency = Label(root, text="Виберіть валюту")
currency.grid(row=0, column=0, stickly='w')

def currency_check():
    rate_value.config(text=currencVal.get())

currencVal = IntVar()
currencVal.set(25)

dollar = Radiobutton(root, text="Долар", variable=currencVal, value=25, command=currency_check)
dollar.grid(row=0, column=1)

euro = Radiobutton(root, text="Євро", variable=currencVal, value=30, command=currency_check)
euro.grid(row=1, column=1)

dollar = Radiobutton(root, ___, variable=currencVal, value=25)
euro = Radiobutton(___, text="Євро", variable=currencVal, value=25)

rate = Label(root, text="Курс")
rate.grid(row=2, column=0, stickly='w')
rate_value = Label(root, text="25")
rate_value.grid(row=2, column=1, stickly='w') 

suma = Label(root, text="Введіть суму у валюті")
suma.grid(row=3, column=0, sticky='w')
suma_entry = Entry(root)
suma_entry.grid(row=3, column=1, sticky='w')
suma_entry.insert(1,"0")

convert = Button(root, text="Конвертувати")
convert.grid(row=4, column=0, sticky='w')

label = Label(root, text="")
label.grid(row=4, column=1, sticky='w')

def calculate(event):
    label.config(text=currencVal.get() * int(suma_entry.get()))
convert.bind("<Button-1>", calculate)

I tried to import differently, change the commands, but nothing changed.

I did my homework from the textbook (easy currency converter), wrote everything as in the assignment, but the Tk window does not change at all, only the usual default Tk window

from tkinter import *

root = Tk()
root.mainloop()
root.geometry("250x130")
root.title("Конвертер")

currency = Label(root, text="Виберіть валюту")
currency.grid(row=0, column=0, stickly='w')

def currency_check():
    rate_value.config(text=currencVal.get())

currencVal = IntVar()
currencVal.set(25)

dollar = Radiobutton(root, text="Долар", variable=currencVal, value=25, command=currency_check)
dollar.grid(row=0, column=1)

euro = Radiobutton(root, text="Євро", variable=currencVal, value=30, command=currency_check)
euro.grid(row=1, column=1)

dollar = Radiobutton(root, ___, variable=currencVal, value=25)
euro = Radiobutton(___, text="Євро", variable=currencVal, value=25)

rate = Label(root, text="Курс")
rate.grid(row=2, column=0, stickly='w')
rate_value = Label(root, text="25")
rate_value.grid(row=2, column=1, stickly='w') 

suma = Label(root, text="Введіть суму у валюті")
suma.grid(row=3, column=0, sticky='w')
suma_entry = Entry(root)
suma_entry.grid(row=3, column=1, sticky='w')
suma_entry.insert(1,"0")

convert = Button(root, text="Конвертувати")
convert.grid(row=4, column=0, sticky='w')

label = Label(root, text="")
label.grid(row=4, column=1, sticky='w')

def calculate(event):
    label.config(text=currencVal.get() * int(suma_entry.get()))
convert.bind("<Button-1>", calculate)

I tried to import differently, change the commands, but nothing changed.

• python
• tkinter
• tk-toolkit

Share Improve this question Follow edited Mar 17 at 12:46 Bryan Oakley 387k5353 gold badges575575 silver badges730730 bronze badges asked Mar 15 at 7:00 Deithul ТетеряDeithul Тетеря 111 silver badge 2

• 2 Misspelled stickly should be sticky. Remove __from Label widgets. Place root.mainloop() at the bottom of the script. – user4136999 Commented Mar 15 at 14:54
• 1 Change this convert.bind("<Button-1>", calculate) to root.bind("<Button-1>", calculate) – user4136999 Commented Mar 15 at 20:11

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1 Answer 1

Sorted by: Reset to default 1

You should place root.mainloop() into the last line. Your code pauses when running root.mainloop() and it will be run after you close the window. So there is nothing.

Still cannot run? Your program may contains some mistakes and typos and you have to fix it.

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