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---
id: 699c8e045ee7cb94ed2322d4
title: "Challenge 213: Word Length Converter"
challengeType: 29
dashedName: challenge-213
---
# --description--
Given a string of words, return a new string where each word is replaced by its length.
- Words in the given string will be separated by a single space
- Keep the spaces in the returned string.
For example, given `"hello world"`, return `"5 5"`.
# --hints--
`convert_words("hello world")` should return `"5 5"`.
```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(convert_words("hello world"), "5 5")`)
}})
```
`convert_words("Thanks and happy coding")` should return `"6 3 5 6"`.
```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(convert_words("Thanks and happy coding"), "6 3 5 6")`)
}})
```
`convert_words("The quick brown fox jumps over the lazy dog")` should return `"3 5 5 3 5 4 3 4 3"`.
```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(convert_words("The quick brown fox jumps over the lazy dog"), "3 5 5 3 5 4 3 4 3")`)
}})
```
`convert_words("Lorem ipsum dolor sit amet consectetur adipiscing elit donec ut ligula vehicula iaculis orci vel semper nisl")` should return `"5 5 5 3 4 11 10 4 5 2 6 8 7 4 3 6 4"`.
```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(convert_words("Lorem ipsum dolor sit amet consectetur adipiscing elit donec ut ligula vehicula iaculis orci vel semper nisl"), "5 5 5 3 4 11 10 4 5 2 6 8 7 4 3 6 4")`)
}})
```
# --seed--
## --seed-contents--
```py
def convert_words(s):
return s
```
# --solutions--
```py
def convert_words(s):
return " ".join(str(len(word)) for word in s.split(" "))
```