freeCodeCamp/curriculum/challenges/chinese/07-scientific-computing-with-python/python-for-everybody/regular-expressions-matching-and-extracting-data.md

id, title, challengeType, videoId, bilibiliIds, dashedName

id	title	challengeType	videoId	bilibiliIds	dashedName
5e7b9f0b0b6c005b0e76f06f	正则表达式：匹配和提取数据	11	LaCZnTbQGkE	aid bvid cid 975629041 BV1i44y1b7hE 414167130	regular-expressions-matching-and-extracting-data

--question--

--text--

该程序会打印出什么？

import re
s = 'A message from csev@umich.edu to cwen@iupui.edu about meeting @2PM'
lst = re.findall('\\S+@\\S+', s)
print(lst)

--answers--

['csev@umich.edu', 'cwen@iupui.edu']

---

['csev@umich.edu']

---

['umich.edu', 'iupui.edu']

---

['csev@', 'cwen@']

--video-solution--

1