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 Escapes

Posted by Ashmit Pathak
Ashmit Pathak
4,441 Points

plz help

can somebody help me with the explanation that what this question is asking me to answer

1 Answer

Gabriel Walsh
Gabriel Walsh
21,531 Points
Gabriel Walsh
Gabriel Walsh
21,531 Points

It's asking for regex word boundaries. It's the reference to the position that is either before or after a string. So the word boundary.

A tortellini sees a yarn as a doggy teacher.

\bsees\b -> position 13-17. A tortellini [here]sees[to here] a yarn as a doggy teacher. \ba\b -> Two matches, 18-19 and 28-29 A tortellini sees [here]a[to here] yarn as [and here]a[to here] doggy teacher.