I have following two dataframes df1 and df2
final raw st
abc 12 10
abc 17 15
abc 14 17
and
final raw
abc 12
abc 14
My expected output is
final raw st
abc 17 15
I would like to delete rows based on common column value.
My try:
df1.isin(df2)
This is giving me Boolean result. Another thing, I tried
df3 = pd.merge(df1, df2, on = ['final', 'raw'], how = 'inner') so that we get all the common columns for df1 and df3.
>Solution :
You are closed with merge you just need extra step. First you need to perform an outer join to keep all rows from both dataframes and enable indicator of merge then filter on this indicator to keep right values (from df2). Finally, keep only columns from df1:
df3 = pd.merge(df1, df2, on = ['final', 'raw'], how='outer', indicator=True) \
.query("_merge == 'left_only'")[df1.columns]
print(df3)
# Output
final raw st
1 abc 17 15