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freeCodeCamp/curriculum/challenges/chinese/07-scientific-computing-with-python/python-for-everybody/regular-expressions-practical-applications.md

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id, title, challengeType, videoId, bilibiliIds, dashedName
id title challengeType videoId bilibiliIds dashedName
5e7b9f0b0b6c005b0e76f070 正则表达式: 实用应用 11 xCjFU9G6x48
aid bvid cid
546924659 BV1mq4y1H7rZ 376386493
regular-expressions-practical-applications

--question--

--text--

在正则表达式中,怎么搜索一个 “$” 符号?

--answers--

$


\dollar\


\$


!$

--video-solution--

3