在 Pandas 中除 0 之外的列中查找重复项

Question

I have a Dataframe with Position varying starting from 0. So I have to check whether the Position is having duplicate values except 0.As 0 can be present multiple times in my case.

if df['Position'].duplicated().any():
 print("Duplicate Positions found..Positions should be unique..Exiting")

This will check for unique values including 0.Is there any way I can exclude 0 while finding duplicates?

Answer 1

You can chain mask by test for not 0 values by Series.ne :

df = pd.DataFrame({'Position':[0,1,2,0]})
    
if (df['Position'].duplicated() & df['Position'].ne(0)).any():
    print("Duplicate Positions found..Positions should be unique..Exiting")