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 Python Basics (2015) Python Data Types Strings

Posted by Innocent Madziya
Innocent Madziya
428 Points

difference between quote marks

favourite_number="90"

print(favourite_number) 90 favourite_number+2 Traceback (most recent call last): File "<pyshell#30>", line 1, in <module> favourite_number+2 TypeError: must be str, not int

why am i getting this error

1 Answer

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

Without seeing more of the code for context, this is a bit of a guess. But it could be that "favourite_number" should be a number instead of a string. Putting "30" in quotes makes it a string — without the quotes it would be a number.