pandas merge query "_merge='left_only'"
d = (
df1.merge(df2,
on=['c', 'l'],
how='left',
indicator=True)
.query('_merge == "left_only"')
.drop(columns='_merge')
)
print(d)
c k l
0 A 1 a
2 B 2 a
4 C 2 dCopyright © 2021 Codeinu
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