更新时间:2023-08-28 16:15:10
您正在使用 merge
,带有参数indicator
和外部联接, drop
:
You an use merge
with parameter indicator
and outer join, query
for filtering and then remove helper column with drop
:
DataFrames连接到所有列,因此可以省略on
参数.
DataFrames are joined on all columns, so on
parameter can be omit.
print (pd.merge(a,b, indicator=True, how='outer')
.query('_merge=="left_only"')
.drop('_merge', axis=1))
0 1
0 1 10
2 3 30