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![Peter Scozzare](https://secure.gravatar.com/avatar/98dc28d9962a6d842ece95a269beac4a?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Peter Scozzare
563 Pointshow do i declare variable
I can't remember how to pass the variable into the curly braces.
age = 40
days = age * 52 * 7
summary = "I am {} days old!"
2 Answers
![MUZ141095 Kelvin Chawora](https://uploads.teamtreehouse.com/production/profile-photos/3683102/micro_kelvine_toon.png)
MUZ141095 Kelvin Chawora
9,348 PointsUse the string conversion format:
summary = "I am {} days old!".format(days)
![Stanley Hataria](https://secure.gravatar.com/avatar/c6182adc1988ef6f0b284a036d791f39?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Stanley Hataria
1,168 Pointsusing str.format()