i’m working on a login system, so i made the display with two buttons Login and Sign up button so i want to make a new page appears when the user clicks one the buttons for example if he clicks on Login the page will update to a page with entry boxes of the credentials and the same thing with the sign up button i need some ideas how to do it i’m somehow beginner in Tkinter, Here is my code :
from tkinter import *
root = Tk()
root.title("Login System")
root.geometry('550x300')
root.configure(bg="Black")
home_label = Label(root,text="Welcome",font=("Helvatica",32),fg="White",bg="Black")
home_label.pack(pady=30)
login = Button(root,text="Login",font=("Nexa",22),bg="White",fg="Black",width=10)
login.pack(pady=0)
signup = Button(root,text="Sign UP",font=("Nexa",22),bg="White",fg="Black",width=10)
signup.pack(pady=5)
root.mainloop()
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Answer
Here is a simple one with a TopLevel()
import tkinter as tk
from tkinter.simpledialog import askstring
from tkinter import *
import os
import re
#Designing window for registration
def register():
global register_screen
register_screen = Toplevel(main_screen)
register_screen.title("Register")
register_screen.geometry("300x250")
#Globalling variables
global username
global password
global username_entry
global password_entry
global invLbl
username = StringVar()
password = StringVar()
#Labels and entry fields for register screen
invLbl = Label(register_screen, text="", fg="red", font=("calibri", 11))
Label(register_screen, text="Please enter details below", bg="blue").pack()
Label(register_screen, text="").pack()
username_lable = Label(register_screen, text="Username * ")
username_lable.pack()
username_entry = Entry(register_screen, textvariable=username)
username_entry.pack()
password_lable = Label(register_screen, text="Password * ")
password_lable.pack()
password_entry = Entry(register_screen, textvariable=password, show='*')
password_entry.pack()
Label(register_screen, text="").pack()
Button(register_screen, text="Register", width=10, height=1, bg="blue", command = register_user).pack()
invLbl.pack()
#Designing window for login
def login():
global login_screen
login_screen = Toplevel(main_screen)
login_screen.title("Login")
login_screen.geometry("300x250")
Label(login_screen, text="Please enter details below to login").pack()
Label(login_screen, text="").pack()
global username_verify
global password_verify
username_verify = StringVar()
password_verify = StringVar()
global username_login_entry
global password_login_entry
Label(login_screen, text="Username * ").pack()
username_login_entry = Entry(login_screen, textvariable=username_verify)
username_login_entry.pack()
Label(login_screen, text="").pack()
Label(login_screen, text="Password * ").pack()
password_login_entry = Entry(login_screen, textvariable=password_verify, show= '*')
password_login_entry.pack()
Label(login_screen, text="").pack()
Button(login_screen, text="Login", width=10, height=1, command = login_verify).pack()
#Implementing event on register button
def register_user():
username_info = username.get()
password_info = password.get()
valid = True
for char in username_info:
if char.isdigit() == True:
valid = False
#If there is a for example a number iin the username, this error message will be printed.
invLbl.config(text="Invalid Username")
if username_info == '':
valid = False
#If the username is left blank, this error message will be printed.
invLbl.config(text="Enter a Username")
#Password Validation
if len(password_info) <3 or len(password_info) > 16:
valid = False
invLbl.config(text="Ensure password is not less than 3 or greater than 16 digits.")
if valid == True:
file = open(username_info, "w")
file.write(username_info + "n")
file.write(password_info)
file.close()
#Registration Success Message
invLbl.config(text="Registration Success!", fg="green")
username_entry.delete(0, END)
password_entry.delete(0, END)
#Implementing event on login button
def login_verify():
username1 = username_verify.get()
password1 = password_verify.get()
username_login_entry.delete(0, END)
password_login_entry.delete(0, END)
list_of_files = os.listdir()
if username1 in list_of_files:
file1 = open(username1, "r")
verify = file1.read().splitlines()
if password1 in verify:
login_sucess()
else:
password_not_recognised()
else:
user_not_found()
#Designing popup for login success
def login_sucess():
global login_success_screen
login_success_screen = Toplevel(login_screen)
login_success_screen.title("Success")
login_success_screen.geometry("150x100")
Label(login_success_screen, text="Login Success").pack()
Button(login_success_screen, text="OK", command=delete_login_success).pack()
#Designing popup for login invalid password
def password_not_recognised():
global password_not_recog_screen
password_not_recog_screen = Toplevel(login_screen)
password_not_recog_screen.title("Success")
password_not_recog_screen.geometry("150x100")
Label(password_not_recog_screen, text="Invalid Password ").pack()
Button(password_not_recog_screen, text="OK", command=delete_password_not_recognised).pack()
#Designing popup for user not found
def user_not_found():
global user_not_found_screen
user_not_found_screen = Toplevel(login_screen)
user_not_found_screen.title("Success")
user_not_found_screen.geometry("150x100")
Label(user_not_found_screen, text="User Not Found").pack()
Button(user_not_found_screen, text="OK", command=delete_user_not_found_screen).pack()
#Deleting popups
def delete_login_success():
login_success_screen.destroy()
login_screen.destroy()
def delete_password_not_recognised():
password_not_recog_screen.destroy()
def delete_user_not_found_screen():
user_not_found_screen.destroy()
#Designing Main(first) window
def main_account_screen():
global main_screen
main_screen = Tk()
main_screen.geometry("300x250")
main_screen.title("Account Login")
Label(text="Select Your Choice", bg="blue", width="300", height="2", font=("Calibri", 13)).pack()
Label(text="").pack()
Button(text="Login", height="2", width="30", command = login).pack()
Label(text="").pack()
Button(text="Register", height="2", width="30", command=register).pack()
main_screen.mainloop()
main_account_screen()