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Python Regular Expressions in Python Introduction to Regular Expressions Email

Posted by Rungano Matonda
Rungano Matonda
3,237 Points

Create a function named find_emails that takes a string.return a list of all the email adress in the string

Hi guys...need help here...I am getting "bummer! multiple repeat"

sets_email.py 
import re

# Example:
# >>> find_email("kenneth.love@teamtreehouse.com, @support, ryan@teamtreehouse.com, test+case@example.co.uk")
# ['kenneth@teamtreehouse.com', 'ryan@teamtreehouse.com', 'test@example.co.uk']
def find_emails(str):
  return re.findall(r'\b[@]+{1}\b', str)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,454 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,454 Points

Hi Rungano Matonda, the regular expression needs to match a complete email address. Your current regex r'\b[@]+{1}\b' says:

word-boundary start-set @-char end-set one-or-more-sets exactly-once word-boundary

What you need is:

word-boundary start-set legal-pre-@-chars end-set one-or-more sets AT-sign start-set legal-post-@-chars end-set one-or-more sets word-boundary

where legal-pre-@-chars is any-word-char, period, and plus-sign, and legal-post-@-chars is any-word-char, and period

This can be represented by the regex r'\b[\w.+]+@[\w.]+\b'

def find_emails(str):
    return re.findall(r'\b[\w.+]+@[\w.]+\b', str)
Rungano Matonda
Rungano Matonda
3,237 Points

Thanks a lot Chris...That really helped me out:)