There is a pandas dataframe on input:
store_id item_id items_sold date
1 1 0 2015-12-28
1 2 1 2015-12-28
1 1 0 2015-12-28
2 2 0 2015-12-28
2 1 1 2015-12-29
2 2 1 2015-12-29
2 1 0 2015-12-29
3 1 0 2015-12-30
3 1 0 2015-12-30
is that what you want?
In [30]: df[df.groupby(['store_id', 'item_id'])['items_sold'].transform('sum') > 0]
Out[30]:
store_id item_id items_sold date
1 1 2 1 2015-12-28
3 2 2 0 2015-12-28
4 2 1 1 2015-12-29
5 2 2 1 2015-12-29
6 2 1 0 2015-12-29
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