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  1. Prepare
  2. Python
  3. Regex and Parsing
  4. Validating and Parsing Email Addresses

Validating and Parsing Email Addresses

  1. Prepare
  2. Python
  3. Regex and Parsing
  4. Validating and Parsing Email Addresses
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A valid email address meets the following criteria:

  • It's composed of a username, domain name, and extension assembled in this format: username@domain.extension
  • The username starts with an English alphabetical character, and any subsequent characters consist of one or more of the following: alphanumeric characters, -,., and _.
  • The domain and extension contain only English alphabetical characters.
  • The extension is , , or characters in length.

Given pairs of names and email addresses as input, print each name and email address pair having a valid email address on a new line.

Hint: Try using Email.utils() to complete this challenge. For example, this code: 

import email.utils
print email.utils.parseaddr('DOSHI <DOSHI@hackerrank.com>')
print email.utils.formataddr(('DOSHI', 'DOSHI@hackerrank.com'))

produces this output:

('DOSHI', 'DOSHI@hackerrank.com')
DOSHI <DOSHI@hackerrank.com>

Input Format

The first line contains a single integer, , denoting the number of email address.
Each line of the subsequent lines contains a name and an email address as two space-separated values following this format:

name <user@email.com>

Constraints

Output Format

Print the space-separated name and email address pairs containing valid email addresses only. Each pair must be printed on a new line in the following format:

name <user@email.com>

You must print each valid email address in the same order as it was received as input.

Sample Input

2  
DEXTER <dexter@hotmail.com>
VIRUS <virus!@variable.:p>

Sample Output

DEXTER <dexter@hotmail.com>

Explanation

dexter@hotmail.com is a valid email address, so we print the name and email address pair received as input on a new line.
virus!@variable.:p is not a valid email address because the username contains an exclamation point (!) and the extension contains a colon (:). As this email is not valid, we print nothing.