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

Posted by Gavin Hughes
Gavin Hughes
6,487 Points

Use .split() and .join()

Hi. Just revisiting some Python exercises that I completed a while back as a refresher and I cant get part 3 of this challenge to pass. I've tried running this in my python shell in terminal and seems that somewhere along the line I'm not creating a string where I should be as update seems to be a list? Not sure what I'm missing.

available = "banana split;hot fudge;cherry;malted;black and white"

sundaes = available.split(";")

menu = "Our available flavors are: {}.".format(sundaes)

update = ', '.join(sundaes)

menu = menu.format(update)
Jeff Muday
Jeff Muday
Treehouse Moderator 28,732 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,732 Points

The last line: menu.format(update)

Doesn't have a brace pair {}, so the update is never put in to the menu.

This might be the intended sequence of commands you were looking for:

available = "banana split;hot fudge;cherry;malted;black and white"
sundaes = available.split(";")
update = ', '.join(sundaes)
menu = "Our available flavors are: {}.".format(update)

4 Answers

jacinator
jacinator
11,936 Points

Very close. This should work.

available = "banana split;hot fudge;cherry;malted;black and white"

sundaes = available.split(";")

menu = "Our available flavors are: {}."  # Remove formatting...

update = ', '.join(sundaes)

menu = menu.format(update)  # ...so that you can format it here.
Gavin Hughes
Gavin Hughes
6,487 Points
Gavin Hughes
Gavin Hughes
6,487 Points

Ah, oops! Thank you.

dmitriy ignatiev
seal-mask
.a{fill-rule:evenodd;}techdegree
dmitriy ignatiev
Python Web Development Techdegree Student 1,789 Points
dmitriy ignatiev
.a{fill-rule:evenodd;}techdegree
dmitriy ignatiev
Python Web Development Techdegree Student 1,789 Points

Hi, everyone

Could you please clarify what wrong with my code below. I don't understand why it is failed in task and i can't go further. I checked my code in shell and it's work perfectly.

available = "banana split;hot fudge;cherry;malted;black and white" sundaes = available.split(";") menu = "Our available flavors are: {}." final_menu = menu.format(",".join(sundaes))

Jeff Muday
Jeff Muday
Treehouse Moderator 28,732 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,732 Points

Dmitriy, Your code is indeed correctly formatted (and runs on my python shell). The only change that might make it pass the code challenge is to change the "join" to include a space after the comment -- see below.

final_menu = menu.format(", ".join(sundaes))
dmitriy ignatiev
seal-mask
.a{fill-rule:evenodd;}techdegree
dmitriy ignatiev
Python Web Development Techdegree Student 1,789 Points
dmitriy ignatiev
.a{fill-rule:evenodd;}techdegree
dmitriy ignatiev
Python Web Development Techdegree Student 1,789 Points

Hi Jeff

Thank you for your help but it still error.

Didn't find the right series of sundaes and commas in menu.

Jeff Muday
Jeff Muday
Treehouse Moderator 28,732 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,732 Points

It's been awhile since I did that code challenge. What is the step in the course for the code challenge? I would be happy to revisit that and comment further.

best, Jeff