Python GUI Calculator using Tkinter

pip install tkinter

#Importing tkinter library
import tkinter as tk
from tkinter import *
root = tk.Tk()
root.geometry("170x230")
root.title("Calculator")
root.maxsize(170,230)
root.minsize(170,230)
#Entry Widgets to show calculations
inp = Entry(root,width=16,borderwidth=3,relief=RIDGE)
inp.grid(pady=10,row=0,sticky="w",padx=15)
#  Button Operation code starts here.. 
def nine():
        inp.insert("end","9")
def eight():
        inp.insert("end","8")
def seven():
        inp.insert("end","7")
def six():
        inp.insert("end","6")
def five():
        inp.insert("end","5")
def four():
        inp.insert("end","4")
def three():
        inp.insert("end","3")
def two():
        inp.insert("end","2")
def one():
        inp.insert("end","1")
def zero():
        inp.insert("end","0")
def double_zero():
        inp.insert("end","00")
def dot():
        inp.insert("end",".")
def plus():
        inp.insert("end","+")
def minus():
        inp.insert("end","-")
def mul():
        inp.insert("end","*")
def divide():
        inp.insert("end","/")
def modulus():
        inp.insert("end","%")
def result():
        if inp.get() == "":
                inp.insert("end","error")
        elif inp.get()[0] == "0":
                inp.delete(0,"end")
                inp.insert("end","error")
        else:
                res = inp.get()
                res = eval(res)
                inp.insert("end"," = ")
                inp.insert("end",res)
def clear():
        inp.delete(0,"end")
#end code 
# Button Design Code starts here.. 
clear = Button(root,text="C",width=2,command=clear,bg="red",fg="white",relief=RIDGE)
clear.grid(row=0,sticky="w",padx=125)
nine = Button(text="9",width=2,command=nine,borderwidth=3,relief=RIDGE)
nine.grid(row=1,sticky="w",padx=15)
eight = Button(text="8",width=2,command=eight,borderwidth=3,relief=RIDGE)
eight.grid(row=1,sticky="w",padx=45)
seven = Button(root,text="7",width=2,command=seven,borderwidth=3,relief=RIDGE)
seven.grid(row=1,sticky="w",padx=75)
plus = Button(root,text="+",width=2,command=plus,borderwidth=3,relief=RIDGE)
plus.grid(row=1,sticky="e",padx=125)
six = Button(text="6",width=2,command=six,borderwidth=3,relief=RIDGE)
six.grid(row=2,sticky="w",padx=15,pady=5)
five = Button(text="5",width=2,command=five,borderwidth=3,relief=RIDGE)
five.grid(row=2,sticky="w",padx=45,pady=5)
four = Button(root,text="4",width=2,command=four,borderwidth=3,relief=RIDGE)
four.grid(row=2,sticky="w",padx=75,pady=5)
minus = Button(root,text="-",width=2,command=minus,borderwidth=3,relief=RIDGE)
minus.grid(row=2,sticky="e",padx=125,pady=5)
three = Button(text="3",width=2,command=three,borderwidth=3,relief=RIDGE)
three.grid(row=3,sticky="w",padx=15,pady=5)
two = Button(text="2",width=2,command=two,borderwidth=3,relief=RIDGE)
two.grid(row=3,sticky="w",padx=45,pady=5)
one = Button(root,text="1",width=2,command=one,borderwidth=3,relief=RIDGE)
one.grid(row=3,sticky="w",padx=75,pady=5)
multiply = Button(root,text="*",width=2,command=mul,borderwidth=3,relief=RIDGE)
multiply.grid(row=3,sticky="e",padx=125,pady=5)
zero = Button(text="0",width=2,command=zero,borderwidth=3,relief=RIDGE)
zero.grid(row=4,sticky="w",padx=15,pady=5)
double_zero = Button(text="00",width=2,command=double_zero,borderwidth=3,relief=RIDGE)
double_zero.grid(row=4,sticky="w",padx=45,pady=5)
dot = Button(root,text=".",width=2,command=dot,borderwidth=3,relief=RIDGE)
dot.grid(row=4,sticky="w",padx=75,pady=5)
divide = Button(root,text="/",width=2,command=divide,borderwidth=3,relief=RIDGE)
divide.grid(row=4,sticky="e",padx=125,pady=5)
result = Button(root,text="=",width=10,command=result,bg="red",fg="white",borderwidth=3,relief=RIDGE)
result.grid(row=5,sticky="w",padx=15,pady=5)
modulus = Button(root,text="%",width=2,command=modulus,borderwidth=3,relief=RIDGE)
modulus.grid(row=5,sticky="e",padx=125,pady=5)
root.mainloop()
# end code