Pandas analogue to SQL MINUS / EXCEPT operator, using multiple columns

Question

I\'m looking for the fastest and idiomatic analog to SQL MINUS (AKA EXCEPT) operator.

Here is what I mean - given two Pandas DataFrames as follows:

I         


        

Answer 1

I am thinking a little bit like excel here:

d1[~d1[['a','b']].astype(str).sum(axis=1).isin(d2[['a','b']].astype(str).sum(axis=1))]

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   a  b  c
1  0  1  2
2  1  0  3
6  2  2  7