Tkinter-program to create a registration form

Create a Registration form in Tkinter to Accept the Roll, Name, and City from user

from tkinter import *
root=Tk()
root.geometry("250x300")
Label(root,text="Student Entry Form",font="arial 14 bold").grid(row=0,columnspan=2)
Label(root,text="").grid(row=1,column=0)
Label(root,text="Roll No ").grid(row=2,column=0)
Label(root,text="").grid(row=3,column=0)
Label(root,text="Name ").grid(row=4,column=0)
Label(root,text="").grid(row=5,column=0)
Label(root,text="City ").grid(row=6,column=0)
Label(root,text="").grid(row=7,column=0)
v1=StringVar()
v2=StringVar()
v3=StringVar()
e1=Entry(root,textvariable=v1).grid(row=2,column=1)
e2=Entry(root,textvariable=v2).grid(row=4,column=1)
e3=Entry(root,textvariable=v3).grid(row=6,column=1)
Button(root,text="Submit").grid(row=8,column=1)
root.mainloop()