How can I count a specific value in group_by in pandas?

Become part of the top 3% of the developers by applying to Toptal https://topt.al/25cXVn

--

Music by Eric Matyas
https://www.soundimage.org
Track title: Sunrise at the Stream

--

Chapters
00:00 Question
00:56 Accepted answer (Score 12)
01:15 Thank you

--

Full question
https://stackoverflow.com/questions/2550...

--

Content licensed under CC BY-SA
https://meta.stackexchange.com/help/lice...

--

Tags
#python #pandas

#avk47