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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, challengeType, videoId
id challengeType videoId
5e7b9f0b0b6c005b0e76f070 11 xCjFU9G6x48

--question--

--text--

What will search for a "$" in a regular expression?

--answers--

$

\dollar\

\$

!$

--video-solution--

3

--hints--

--solutions--