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Lesson 7 of 8 in Coddy's Email validator using Python course.

To wrap it all, let's add clear messages to the user.

Challenge

Easy

Add the following support to your program:

instead of printing True or False, print "Email is valid" or "Email is invalid" depend on the case.
before the user get asked for input, print the message "Enter email:", with new line.

Try it yourself

PERMITS_RECIEPENT = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789._'
PERMITS_DOMAIN = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-'

def validate(email):
    if not email.count('@') == 1:
        return False

    recipient_name = email.split('@')[0]
    if len(recipient_name) > 24 or len(recipient_name) < 3:
        return False
    for c in recipient_name:
        if c not in PERMITS_RECIEPENT:
            return False
    if '.' == recipient_name[0] or '.' == recipient_name[-1] or '_' == recipient_name[0] or '_' == recipient_name[-1]:
        return False
    
    domain_name = email.split('@')[1].split('.')[0]
    if len(domain_name) > 12 or len(domain_name) < 3:
        return False
    for c in domain_name:
        if c not in PERMITS_DOMAIN:
            return False
    
    top_level_domain_name = email.split('@')[1].split('.')[1]
    if top_level_domain_name not in ['com', 'org', 'net', 'tech']:
        return False
    return True

if __name__ == "__main__":
    email = input()
    is_valid = validate(email)
    print(is_valid)

All lessons in Email validator using Python

1Introduction

Introduction

2The Validator

@ symbol Recipient name

Domain name

Top-level domain

3The Program

Call validate

Last additions Project lesson

Final words