How to update values in tkinter

import tkinter as tk

win = tk.Tk()
max_amount = 0
label1 = None #just so it is defined

def fun():
    global max_amount, label1
    max_amount +=100
    label1.configure(text='Balance :$' + str(max_amount))

btn = tk.Button(win,text = 'Change', command = fun)
btn.grid()
t1 =str(max_amount)
label1 = tk.Label(win,text = 'Balance :$' + t1)
label1.grid()

win.mainloop()

Source: stackoverflow.com

Similar codes

7 votes253 views3 answers
Pandas replace nonetype with empty string
Python
8 votes249 views3 answers
Python append csv to dataframe
Python
4 votes195 views1 answer
Python words in string
Python
0 vote261 views1 answer
Evaluate value of polynomial in python code
Python
156 votes320 views10 answers
Python random
Python
1 vote281 views1 answer
Any python type hint
Python
0 vote275 views1 answer
Python count one to ten
Python
0 vote260 views1 answer
Float infinity python
Python
0 vote271 views3 answers
Click on button tag with only class selenium python
Python
3 votes263 views2 answers
Django radio button
Python