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Python Regular Expressions in Python Introduction to Regular Expressions Email Groups

Vianney Gall
Vianney Gall
5,342 Points
Posted by Vianney Gall
Vianney Gall
5,342 Points

emails.py I am not sure what is wrong about this code:

I keep having "Bummer: Didn't get a regex search object" from my code. Not sure how to correct it.

Thanks you for your help!

emails.py 
import re

string = '''Love, Kenneth, kenneth+challenge@teamtreehouse.com, 555-555-5555, @kennethlove
Chalkley, Andrew, andrew@teamtreehouse.co.uk, 555-555-5556, @chalkers
McFarland, Dave, dave.mcfarland@teamtreehouse.com, 555-555-5557, @davemcfarland
Kesten, Joy, joy@teamtreehouse.com, 555-555-5558, @joykesten'''

contacts = re.search(r"""
    ^(?P<email>[\w+]+@[\w.]+),\s            # E-mail
    (?P<phone>\d{3}-\d{3}-\d{4}),\s         # phone number
    (?P<twitters>@[\w\d]+)$                 # twitter
""", string, re.X|re.I|re.M)

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

Hi Vianney, you are very close! By using the carot (^) marker you are saying "this pattern should match from the first character in the line. Since your pattern does not handle the contact's full name, it fails return None.

Removing the carot results in a regex search object, but it is incorrect because it also include a named "twitter" group that is not asked for. Remove the "(?P<twitters>" and the matching ")" and it should pass. Or remove whole "(?P<twitters>@[\w\d]+)$" from the regex

Post back if you need more help. Good luck!!

Vianney Gall
Vianney Gall
5,342 Points
Vianney Gall
Vianney Gall
5,342 Points

Hi Chris!

I've got the first and second part right! Here is me code for the second part after some (a lot) experimenting:

import re

string = '''Love, Kenneth, kenneth+challenge@teamtreehouse.com, 555-555-5555, @kennethlove
Chalkley, Andrew, andrew@teamtreehouse.co.uk, 555-555-5556, @chalkers
McFarland, Dave, dave.mcfarland@teamtreehouse.com, 555-555-5557, @davemcfarland
Kesten, Joy, joy@teamtreehouse.com, 555-555-5558, @joykesten'''

contacts = re.search(r"""
    (?P<email>[\w+]+@[\w.]+),\s            # E-mail
    (?P<phone>\d{3}-\d{3}-\d{4}),\s         # phone number
""", string, re.X|re.I|re.M)

twitters = re.search(r"""
    (?P<twitters>\s@[\w\d]+$)                 # twitter
""", string, re.X|re.I|re.M)
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

Again SO close! Your twitters pattern is capturing a leading space in the group pattern. Remove the \s and it should pass. Good Luck!!

Vianney Gall
Vianney Gall
5,342 Points
Vianney Gall
Vianney Gall
5,342 Points

Thank you so much!!!