如何从 Dataframe 中删除行，其中 2 列中的值是 sam？

Question

My DF looks like below

Date   New_date X  Y
01-12  01-12    3  4
01-13  01-13    6  1
01-14  01.15    2  3

I need this result:

Date   New_date X  Y
01-14  01.15    2  3

o code should remove first 2 rows because values in columns Date and New_date are the same. I tried with this:

df.drop(df.loc[df['Date'] == df['New_date']])

But it doesn't work. Any idea?

Best regards and thanks for help

Answer 1

Use pd.DataFrame.drop_duplicates

df = df.drop_duplicates(subset=['Date', 'New_date'], keep=False)

Answer 2

Change logic - get all rows if not equal values.

So change == to != for not equal values and filter in boolean indexing :

df = df[df['Date'] != df['New_date']]
print (df)
    Date New_date  X  Y
2  01-14    01.15  2  3