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![Andy McDonald](https://secure.gravatar.com/avatar/2c7a70bb997cb62e77a9341481bf2b27?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Andy McDonald
Python Development Techdegree Graduate 13,801 PointsCategory/vocabulary question:
I'm trying to make organized notes. As len and round are functions what is try, if, and except to?
2 Answers
![Chris Freeman](https://uploads.teamtreehouse.com/production/profile-photos/1153532/micro_image.jpg)
Chris Freeman
Treehouse Moderator 68,425 PointsCorrect. len and round are built-in functions.
try/except and if are called compound statements.
The Python docs are a great source of information.
Post back if you need more help. Good luck!!!
![Peter Vann](https://uploads.teamtreehouse.com/production/profile-photos/8935412/micro_MaiTaiPeteGravatar.jpg)
Peter Vann
36,426 PointsHi Andy!
I believe Assert, Raise, Try, Except, Else, and Finally all just fall under the general category of "Exceptions" (And/or "Error Handling" and/or "Exception Control Flow").
The whole idea is that it is conditional code you can put in your program that if something goes "off-the-rails" (fails/errors), your program (execution) won't grind to an abrupt halt.
More info:
https://realpython.com/python-exceptions/
http://tutors.ics.uci.edu/index.php/79-python-resources/104-try-except
https://www.geeksforgeeks.org/try-except-else-and-finally-in-python/
I hope that/these help(s).
Stay safe and happy coding!
![Chris Freeman](https://uploads.teamtreehouse.com/production/profile-photos/1153532/micro_image.jpg)
Chris Freeman
Treehouse Moderator 68,425 PointsNot correct.