Drobo ตัวใด (ตัวที่ 2) มี Drobo 5d ของ 2012-11-02?
Which Drobo (2nd) has a Drobo 5d of 2012-11-02?
df = pd.DataFrame(columns=['drobo__2nd_', 'drobo_5d'])
df[df['drobo_5d'] == '2012-11-02']['drobo__2nd_']