Resizer window in Python Tkinter

 

from tkinter import *

a = Tk()

a.geometry("400x300")

Label(a,text="Enter Height").grid(row=1,pady=10,ipadx=50)

Label(a,text="Enter width").grid(row=2)

hei = StringVar()

wid = StringVar()

Entry(a,textvariable=hei).grid(row=1,column=2,ipadx=20,ipady=2)

Entry(a,textvariable=wid).grid(row=2,column=2,ipadx=20,ipady=2)

def resize():

    a.geometry(f"{hei.get()}x{wid.get()}")

Button(a,text="Apply",command=resize,bg="gray",padx=20,pady=10).grid(padx=40,pady=20

                                                                            ,column=2)

a.mainloop()