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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, dashedName
id title challengeType videoId dashedName
5e7b9f0b0b6c005b0e76f070 正则表达式： 实用应用 11 xCjFU9G6x48 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