tkinter python button position problem

[BashBedlam]

You might do better using place rather than grid for this.

from tkinter import *
  
root = Tk()
root.geometry("345x380")
root.title("Calculator")
root.resizable (False, False)
window = Entry(root, width = 40).place (x = 8, y = 10)   
  
button_7 = Button(root, text = "7" , padx = 50, pady = 30).place (x = 0, y = 40)
button_8 = Button(root, text = "8" , padx = 50, pady = 30).place (x = 115, y = 40)
button_9 = Button(root, text = "9" , padx = 50, pady = 30).place (x = 230, y = 40)

button_4 = Button(root, text = "4" , padx = 50, pady = 30).place (x = 0, y = 125)
button_5 = Button(root, text = "5" , padx = 50, pady = 30).place (x = 115, y = 125)
button_6 = Button(root, text = "6" , padx = 50, pady = 30).place (x = 230, y = 125)

button_1 = Button(root, text = "1" , padx = 50, pady = 30).place (x = 0, y = 210)
button_2 = Button(root, text = "2" , padx = 50, pady = 30).place (x = 115, y = 210)
button_3 = Button(root, text = "3" , padx = 50, pady = 30).place (x = 230, y = 210)

button_0 = Button(root, text = "0" , padx = 35, pady = 30).place (x = 0, y = 295)
button_minus = Button(root, text = "-" , padx = 35, pady = 30).place (x = 85, y = 295)
button_add =   Button(root, text = "+" , padx = 35, pady = 30).place (x = 166, y = 295)
button_equal = Button(root, text = "=" , padx = 35, pady = 30).place (x = 257, y = 295)
 
root.mainloop()