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Kamaldeep0077/groupby transform

Created December 6, 2020 18:28
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groupby transform
data['Item_Outlet_Sales_Mean'] = data.groupby(['Item_Identifier', 'Item_Type'])['Item_Outlet_Sales']\
.transform(lambda x: x.mean())
data[['Item_Identifier','Item_Type','Item_Outlet_Sales','Item_Outlet_Sales_Mean']].tail()
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