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junhao wang
4,283 PointsHow to get twitter account at the end of line using re.search
How to get twitter account at the end of line using re.search?
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\d+]+@[\w.]+),\s
(?P<phone>\d{3}-\d{3}-\d{4})
''',string,re.X)
twitters = re.search(r'''
^[,. \w\d@]+
(\b@[\w\d]+)$
''',string,re.X|re.M)
1 Answer
Chris Freeman
Treehouse Moderator 68,441 PointsYou have the right idea, but are over complicating it. The twitter search can take advantage of the end-of-line maker "$". This makes the first preceding "@" unique to the twitter name. The leading "\b" is redundant and error prone since it is a word boundary marker character, but the at-sign is a word boundary character and so is sufficient. Removing the extra items in front of the group will pass the challenge:
contacts = re.search(r'''
(?P<email>[\w\d+]+@[\w.]+),\s
(?P<phone>\d{3}-\d{3}-\d{4})
''',string,re.X)
twitters = re.search(r'''
#^[,. \w\d@]+ # <-- commented out
(@[\w\d]+)$
''',string,re.X|re.M)