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How to make a button open a new window in python

# This will import all the widgets
# and modules which are available in
# tkinter and ttk module
from tkinter import *
from tkinter.ttk import *
 
# creates a Tk() object
master = Tk()
 
# sets the geometry of main
# root window
master.geometry("200x200")
 
 
# function to open a new window
# on a button click
def openNewWindow():
     
    # Toplevel object which will
    # be treated as a new window
    newWindow = Toplevel(master)
 
    # sets the title of the
    # Toplevel widget
    newWindow.title("New Window")
 
    # sets the geometry of toplevel
    newWindow.geometry("200x200")
 
    # A Label widget to show in toplevel
    Label(newWindow,
          text ="This is a new window").pack()
 
 
label = Label(master,
              text ="This is the main window")
 
label.pack(pady = 10)
 
# a button widget which will open a
# new window on button click
btn = Button(master,
             text ="Click to open a new window",
             command = openNewWindow)
btn.pack(pady = 10)
 
# mainloop, runs infinitely
mainloop()

Source: geeksforgeeks.org

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