from tkinter import * from tkinter import messagebox def login(): username = entry1.get() password = entry2.get() if username =='' and password=='': messagebox.showerror('login', 'blanks are not allowed') elif username =='optometryfans' and password== '12345': messagebox.showerror('login', 'Login Successful') root.destroy() top =Tk() top.configure(bg='white') label4 = Label(top, text = 'Welcomme!', font=('areal', 30), bg='white') label4.place(x=550, y=300) else : messagebox.showerror('login', 'Incorrect Login and Password') root=Tk() root.configure(bg='cyan4') global entry1 global entry2 label1= Label(root, text ='Optometry Fans LogIn Page', bg='cyan3', fg='black', font=('areal', 20), bd=5) label1.place(x=500, y=50) label2= Label(root, text ='User Name :', bg='cyan4', fg='white', font=('areal', 21)) label2.place(x=405, y=150) label3= Label(root, text ='Password :', bg='cyan4', fg='white', font=('areal', 21),) label3.place(x=405, y=250) entry1=Entry(root, font=('areal', 18)) entry1.place(x=600, y=160) entry2=Entry(root, font=('areal', 18), show='*') entry2.place(x=600, y=250) button=Button(root, text='Click to Login', bg='cyan3', font=('areal', 15), bd=5, command=login) button.place(x=600, y=350) root.mainloop()

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