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chore: import upstream snapshot with attribution
2026-07-13 11:55:53 +08:00

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---
id: 691b559495c5cb5a37b9b486
title: "Challenge 126: Capitalize It"
challengeType: 29
dashedName: challenge-126
---
# --description--
Given a string title, return a new string formatted in title case using the following rules:
- Capitalize the first letter of each word.
- Make all other letters in each word lowercase.
- Words are always separated by a single space.
# --hints--
`title_case("hello world")` should return `"Hello World"`.
```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(title_case("hello world"), "Hello World")`)
}})
```
`title_case("the quick brown fox")` should return `"The Quick Brown Fox"`.
```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(title_case("the quick brown fox"), "The Quick Brown Fox")`)
}})
```
`title_case("JAVASCRIPT AND PYTHON")` should return `"Javascript And Python"`.
```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(title_case("JAVASCRIPT AND PYTHON"), "Javascript And Python")`)
}})
```
`title_case("AvOcAdO tOAst fOr brEAkfAst")` should return `"Avocado Toast For Breakfast"`.
```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(title_case("AvOcAdO tOAst fOr brEAkfAst"), "Avocado Toast For Breakfast")`)
}})
```
# --seed--
## --seed-contents--
```py
def title_case(title):
return title
```
# --solutions--
```py
def title_case(title):
return " ".join(
w[:1].upper() + w[1:].lower()
for w in title.split(" ")
)
```