How to validate if entered email is in valid format.

An email must have @ and . in the email address name, so a check needs to be perform to check if data entered by user is a valid format of email id or not.

below code will to design the above form, then we will check by entering data differently to validate entered data in email section.

#program

try:
    from Tkinter import *
except:
    from tkinter import *

def display(message):
    mb = Tk()
    mb.geometry('200x50+250+75')
    mb.title("Aeties_Action")
    msg = Label(mb, text=message).pack()
    mainloop()

def validate_email():
    email=email_e.get()
    if '@' in email and '.' in email:
        display("e-mail format is valid")
    else:
        display("invalid format of e-mail")

mw = Tk()

mw.geometry("400x100+50+50")
mw.title("AETies : Automation Expert Technologies")

email_l = Label(mw, text='  enter email id :', pady=5).pack()
email_e = Entry(mw, width=20)
email_e.pack()
email_btn = Button(mw, text=' Validate ', command=validate_email).pack()

mainloop()

below are the different cases for user input of e-mail id.

Format of mail can be validated, but not if email is a valid mail id or not.