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

Question on str function

'a' + str(6) prints a6 and, '6' + str('a') prints 6a but, '6' + str(a) gives error. why so ?

1 Answer

Dave StSomeWhere
Dave StSomeWhere
19,870 Points

What is your error and what do you think Python is looking for?

Typing str(a) gives me a NameError. Which should make sense since I haven't defined a variable named a. Hence to Python a is undefined.

Now if you assign the letter a to the variable a, you can use the str() method.

a = 'a'
str(a)