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

---
id: 5e7b9f0b0b6c005b0e76f070
challengeType: 11
videoId: xCjFU9G6x48
---

# --question--

## --text--

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

## --answers--

$

---

\\dollar\\

---

\\$

---

!$

## --video-solution--

3

# --hints--


# --solutions--