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![Tzu-Hsuan Yen](https://secure.gravatar.com/avatar/719fdaef2ec570b9419c8a3a3732690e?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Tzu-Hsuan Yen
196 PointsI dont know how to use "str.format"
I dont know how to use "str.format"
name = "mark"
treehouse = "Tree"+"house"
email_greeting = "{} loves {}".format(name,treehouse)
2 Answers
![Brendan Whiting](https://uploads.teamtreehouse.com/production/profile-photos/2109002/micro_picture.jpg)
Brendan Whiting
Front End Web Development Techdegree Graduate 84,736 PointsYou're using it right. I'm trying to step through the challenge to check your code but the system seems to be slow. Possible problems that I can see:
maybe they want "Treehouse loves mark" instead of "mark loves Treehouse"? (in which case you would put the variables in the other order)
why is the variable treehouse "Tree"+"house" - is that what they asked for?
![Chris Freeman](https://uploads.teamtreehouse.com/production/profile-photos/1153532/micro_image.jpg)
Chris Freeman
Treehouse Moderator 68,423 PointsYou are using it correctly, you need to reverse name
and treehouse
to get "Treehouse loves mark" instead of "mark loves Treehouse".
![Tzu-Hsuan Yen](https://secure.gravatar.com/avatar/719fdaef2ec570b9419c8a3a3732690e?s=60&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Tzu-Hsuan Yen
196 PointsYou guys were right.
Tzu-Hsuan Yen
196 PointsTzu-Hsuan Yen
196 PointsThank you.