Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Regular Expressions in Python Introduction to Regular Expressions Negated Numbers

Create a variable named good_numbers that is an re.findall() where the pattern matches anything in string except the num

I Tried this by myself and added an except statement, but python is saying syntax Error.

negate.py
import re

string = '1234567890'
good_numbers = re.findall()
except: 
    (5, 6, 7)

1 Answer

Steven Parker
Steven Parker
231,125 Points

Here are a few hints:

  • except is only used in combination with try, but you won't need either of them here
  • re.findall requires two arguments, a pattern and the string
  • the pattern you choose is what will accomplish the task