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Python Regular Expressions in Python Introduction to Regular Expressions Players Dictionary and Class

Robert Allen
Robert Allen
10,550 Points

Stuck on Challenge Task 1

Hello,

I'm seeing this when I run my code:

Bummer! Didn't get the right results. Got [('Love', 'Kenneth', '20'), ('Chalkley', 'Andrew', '25'), ('McFarland', 'Dave', '10'), ('Kesten', 'Joy', '22')].

Any idea what I've done wrong?

players.py
import re

string = '''Love, Kenneth: 20
Chalkley, Andrew: 25
McFarland, Dave: 10
Kesten, Joy: 22
Stewart Pinchback, Pinckney Benton: 18'''

players = re.match('''
    ^(?P<last_name>[\w]+),\s
    (?P<first_name>[\w]+):\s
    (?P<score>[\w]+)?
''', string, re.X|re.M)

3 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,166 Points

My solution from this post:

In the Players Dictionary and Class Challenge Task 1 of 2

Create a variable named players that is an re.search() or re.match() to capture three groups: last_name, first_name, and score. It should include re.MULTILINE.

Your current code has a few issues:

players = re.search r'(?P<last_name>\w),\s(?Pfirst_name>\w+):\s(?P<score>\dt',string,re.M

Here are the issues:

  • re.search() is a method. It's arguments need to be wrapped in parens "( )".
  • In the sample string, names can contain spaces. Add a space to the matching character set
  • Last name needs to match more than a single character. Add plus sign to character set
  • Score needs to match more than a single digit. Add plus sign to character set. **For readability I also added brackets "[]"
  • <code><</code>first_name<code>></code> parameter is missing the leading "<code><</code>". Add missing "<code><</code>"
  • The last named pattern <code><</code>score<code>></code> is missing closing paren ")". Add closing paren.
  • There is an extra trailing "t" in the regular expression. Remove trailing "t"
players = re.search(r'(?P<last_name>[\w ]+),\s(?P<first_name>[\w ]+):\s(?P<score>[\d]+)', string, re.M)

The end result: Well done! You're doing great!

Ken Alger
STAFF
Ken Alger
Treehouse Teacher

Robert:

chris freeman does a great job explaining this challenge in this post.

Take a look and post back if you have additional questions.

Happy coding,

Ken

[MOD: fixed broken link -cf]

Iain Diamond
Iain Diamond
29,379 Points

Notice that the final person in the list has a \s in his first and last names?