fix(py3): Convert filter to list for indexing
diff --git a/erpnext/stock/doctype/stock_entry/test_stock_entry.py b/erpnext/stock/doctype/stock_entry/test_stock_entry.py
index 9095075..448e2db 100644
--- a/erpnext/stock/doctype/stock_entry/test_stock_entry.py
+++ b/erpnext/stock/doctype/stock_entry/test_stock_entry.py
@@ -562,7 +562,7 @@
 		for d in stock_entry.get("items"):
 			if d.item_code != "_Test FG Item 2":
 				rm_cost += flt(d.amount)
-		fg_cost = filter(lambda x: x.item_code=="_Test FG Item 2", stock_entry.get("items"))[0].amount
+		fg_cost = list(filter(lambda x: x.item_code=="_Test FG Item 2", stock_entry.get("items")))[0].amount
 		self.assertEqual(fg_cost,
 			flt(rm_cost + bom_operation_cost + work_order.additional_operating_cost, 2))