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88 lines
2.4 KiB
Markdown
88 lines
2.4 KiB
Markdown
---
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id: 691b559495c5cb5a37b9b482
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title: "Challenge 122: Markdown Bold Parser"
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challengeType: 29
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dashedName: challenge-122
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---
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# --description--
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Given a string that may include some bold text in Markdown, return the equivalent HTML string.
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- Bold text in Markdown is any text that starts and ends with two asterisks (`**`) or two underscores (`__`).
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- There cannot be any spaces between the text and the asterisks or underscores, but there can be
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spaces in the text itself.
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- Convert all bold occurrences to HTML `b` tags and return the string.
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For example, given `"**This is bold**"`, return `"<b>This is bold</b>"`.
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Note: The console may not display HTML tags in strings when logging messages. Check the browser console to see logs with tags included.
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# --hints--
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`parse_bold("**This is bold**")` should return `"<b>This is bold</b>"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(parse_bold("**This is bold**"), "<b>This is bold</b>")`)
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}})
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```
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`parse_bold("__This is also bold__")` should return `"<b>This is also bold</b>"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(parse_bold("__This is also bold__"), "<b>This is also bold</b>")`)
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}})
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```
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`parse_bold("**This is not bold **")` should return `"**This is not bold **"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(parse_bold("**This is not bold **"), "**This is not bold **")`)
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}})
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```
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`parse_bold("__ This is also not bold__")` should return `"__ This is also not bold__"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(parse_bold("__ This is also not bold__"), "__ This is also not bold__")`)
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}})
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```
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`parse_bold("The **quick** brown fox __jumps__ over the **lazy** dog.")` should return `"The <b>quick</b> brown fox <b>jumps</b> over the <b>lazy</b> dog."`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(parse_bold("The **quick** brown fox __jumps__ over the **lazy** dog."), "The <b>quick</b> brown fox <b>jumps</b> over the <b>lazy</b> dog.")`)
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}})
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```
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# --seed--
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## --seed-contents--
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```py
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def parse_bold(markdown):
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return markdown
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```
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# --solutions--
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```py
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import re
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def parse_bold(markdown):
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markdown = re.sub(r'\*\*(\S(?:.*?\S)?)\*\*', r'<b>\1</b>', markdown)
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markdown = re.sub(r'__(\S(?:.*?\S)?)__', r'<b>\1</b>', markdown)
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return markdown
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```
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