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Python Regular Expressions in Python Introduction to Regular Expressions Name Groups

Posted by Kirome Thompson
Kirome Thompson
5,350 Points

Regular expression pattern matching.

Not sure what I am doing wrong but I have this name groups regular expression that I cant see where I am going wrong can anyone help?

It will compile but it prints out 'none'

names.py 
import re

string = 'Perotto, Pier Giorgio'

print(re.match(r'''
    ^(?P<fullname>[-\w ]+,\s[-\w ]+)$
''', string, re.X))
print(string)
kyle kitlinski
kyle kitlinski
5,619 Points
kyle kitlinski
kyle kitlinski
5,619 Points

What is the intended output? the name?

import re
string = 'Perotto, Pier Giorgio'
print(re.match(r'''
    ^(?P<fullname>[-\w ]+,\s[-\w ]+)$
''', string, re.X).group()) #### added .group() at the end
print(string)
>> Perotto, Pier Giorgio
>> Perotto, Pier Giorgio
Jonathan Kuhl
Jonathan Kuhl
26,133 Points
Jonathan Kuhl
Jonathan Kuhl
26,133 Points

I got it to work by removing the ^...$ that was surrounding the regex:

(?P<fullname>[-\w]+,\s[-\w]+)

Try using https://regexr.com/ when building regex.

1 Answer

Kirome Thompson
Kirome Thompson
5,350 Points
Kirome Thompson
Kirome Thompson
5,350 Points

@kyle kitlinski

Hi yes it is part of the name groups of the python coding challenge it is supposed to take a variable names that is a re.match() against the string and should provide groups for the first and last names separate

Kirome Thompson
Kirome Thompson
5,350 Points

with both methods still not being accepted by treehouse compiler :(