Cant understand Tkinter Grid System-CodePudding

I just started learning Tkinter and I'm trying to make a calculator but the buttons wont position as i want. I dont understand the grid concept, my rows are right but columns are messed up and have massive gaps between. I need help in fixing the columns, I just dont get it

from tkinter import *

root = Tk()
root.title("Simple Calculator")

input_field = Entry(root, borderwidth = 5, fg = "black", width = 40)

button_1 = Button(root, text = "1")
button_2 = Button(root, text = "2")
button_3 = Button(root, text = "3")
button_4 = Button(root, text = "4")
button_5 = Button(root, text = "5")
button_6 = Button(root, text = "6")
button_7 = Button(root, text = "7")
button_8 = Button(root, text = "8")
button_9 = Button(root, text = "9")
button_0 = Button(root, text = "0")

button_1.grid(row = 1, column = 0)
button_2.grid(row = 1, column = 1)
button_3.grid(row = 1, column = 2)
button_4.grid(row = 2, column = 1)
button_5.grid(row = 2, column = 2)
button_6.grid(row = 2, column = 3)
button_7.grid(row = 3, column = 1)
button_8.grid(row = 3, column = 2)
button_9.grid(row = 3, column = 3)
button_0.grid(row = 4, column = 0)

input_field.grid(row = 0, column = 0, columnspan = 3,  padx = 30, pady = 30)

root = mainloop()

CodePudding user response：

you can use sticky perimeter in grid And you can also use rowconfigure and columncongifure

You can to create different frame for buttons

You should read this https://tkdocs.com/tutorial/grid.html

You can try this:-

from tkinter import*
root = Tk()
root.title("Simple Calculator")

input_field = Entry(root, borderwidth = 5, fg = "black", width = 40)
input_field.pack()
frame = Frame(root)
frame.pack(expand=True,fill=BOTH)
for i in range(1,4):
    frame.rowconfigure(i,weight=1)
for i in range(0,4):
    frame.columnconfigure(i,weight=1)

button_1 = Button(frame, text = "1")
button_2 = Button(frame, text = "2")
button_3 = Button(frame, text = "3")
button_4 = Button(frame, text = "4")
button_5 = Button(frame, text = "5")
button_6 = Button(frame, text = "6")
button_7 = Button(frame, text = "7")
button_8 = Button(frame, text = "8")
button_9 = Button(frame, text = "9")
button_0 = Button(frame, text = "0")

button_1.grid(row = 1, column = 0,sticky=NSEW)
button_2.grid(row = 1, column = 1,sticky=NSEW)
button_3.grid(row = 1, column = 2,sticky=NSEW)
button_4.grid(row = 2, column = 1,sticky=NSEW)
button_5.grid(row = 2, column = 2,sticky=NSEW)
button_6.grid(row = 2, column = 3,sticky=NSEW)
button_7.grid(row = 3, column = 1,sticky=NSEW)
button_8.grid(row = 3, column = 2,sticky=NSEW)
button_9.grid(row = 3, column = 3,sticky=NSEW)
button_0.grid(row = 4, column = 0,sticky=NSEW)



root = mainloop()