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

Posted by Pabba Anu Bharath
Pabba Anu Bharath
2,049 Points

Not able to get the task 2 from the last challenge in Regular Expression Course:

Question: Wow! OK, now, create a class named Player that has those same three attributes, last_name, first_name, and score. I should be able to set them through init.

I am new to python. Can you please explain me how to solve this question.

players.py 
import re

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

regex = re.compile(r'^(?P<last_name>[a-zA-Z\s]+),\s(?P<first_name>[a-zA-Z\s]+):\s(?P<score>[0-9]+)$', re.MULTILINE)
players = re.search(regex, string)

class Player:
    last_name = ""
    first_name = ""
    score = 0
Pabba Anu Bharath
Pabba Anu Bharath
2,049 Points

Hi Chris, Thanks for reaching to help. Sorry I've updated the code now.

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

The next step is to add an __init__ method. It should take self and keyword arguments last_name, first_name, and score. Use these kwargs to set the local attributes.

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

Pabba Anu Bharath
Pabba Anu Bharath
2,049 Points

I get an error : Wasn't able to create correct instances. Got {}.

players.py 
import re

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


regex = re.compile(r'^(?P<last_name>[a-zA-Z\s]+),\s(?P<first_name>[a-zA-Z\s]+):\s(?P<score>[0-9]+)$', re.MULTILINE)
players = re.search(regex, string)

class Player:
    last_name = ""
    first_name = ""
    score = 0
    def __init__(self,**kwargs):
        last_name,first_name,score =kwargs
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

It's better, in this case, to explicitly list each keyword argument in the __init__. Also the assignments need to be to attributes in the form self.last_name = last_name

Pabba Anu Bharath
Pabba Anu Bharath
2,049 Points
Pabba Anu Bharath
Pabba Anu Bharath
2,049 Points

Thanks a lot Chris!