Filter dataframe value

Question

I have a dataframe that I want to filter by value more than 20

ID   value
A    10
B    21
C    22

I used df['ID'] > 20 and received result

False
True
True

However, I want it to return B, C, not boolean value

Answer 1

df.loc is your friend:

df.loc[df['value'] > 20, 'ID']