diff --git a/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.js b/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.js
index bb780e5..d7c50a6 100644
--- a/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.js
+++ b/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.js
@@ -11,24 +11,8 @@
       fieldtype: "Link",
       options: "Company",
       mandatory: true,
-			default: frappe.defaults.get_user_default("Company"),
+      default: frappe.defaults.get_user_default("Company"),
     },
-    // {
-      // label: __("Account"),
-      // fieldname: "account",
-      // fieldtype: "Link",
-      // options: "Account",
-      // mandatory: true,
-			// get_query() {
-				// const company = frappe.query_report.get_filter_value('company');
-				// return {
-					// "doctype": "Account",
-					// "filters": {
-						// "company": company,
-					// }
-				// }
-			// },
-    // },
     {
       label: __("From Date"),
       fieldname: "from_date",
diff --git a/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.py b/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.py
index e2c6f79..0d60173 100644
--- a/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.py
+++ b/erpnext/stock/report/cogs_by_item_group/cogs_by_item_group.py
@@ -52,13 +52,13 @@
 	assign_agg_values(leveled_dict)
 	
 	data = []
-	for _, i in leveled_dict.items():
+	for item in leveled_dict.items():
+		i = item[1]
 		if i['agg_value'] == 0:
 			continue
 		data.append(get_row(i['name'], i['agg_value'], i['is_group'], i['level']))
 		if i['self_value'] < i['agg_value'] and i['self_value'] > 0:
 			data.append(get_row(i['name'], i['self_value'], 0, i['level'] + 1))
-	# append_blank()
 	return data
 
 
@@ -76,9 +76,10 @@
 
 def get_stock_value_difference_list(filtered_entries):
 	voucher_nos = [fe.get('voucher_no') for fe in filtered_entries]
-	svd_list = frappe.get_list('Stock Ledger Entry',
-				 fields=['item_code','stock_value_difference'], 
-				 filters=[('voucher_no', 'in', voucher_nos)])
+	svd_list = frappe.get_list(
+		'Stock Ledger Entry', fields=['item_code','stock_value_difference'],
+		filters=[('voucher_no', 'in', voucher_nos)]
+	)
 	assign_item_groups_to_svd_list(svd_list)
 	return svd_list
 
@@ -155,22 +156,19 @@
 def get_item_groups_map(svd_list):
 	# for items in svd_list: [{'item_code':'item_group'}]
 	item_codes = set([i['item_code'] for i in svd_list])
-	ig_list = frappe.get_list('Item',
-				 fields=['item_code','item_group'], 
-				 filters=[('item_code', 'in', item_codes)])
+	ig_list = frappe.get_list(
+		'Item', fields=['item_code','item_group'],
+		filters=[('item_code', 'in', item_codes)]
+	)
 	return {i['item_code']:i['item_group'] for i in ig_list}
 
 
-def append_blank(data):
-	if len(data) == 0:
-		data.append(get_row("", 0, 0, 0))
-
-
 def get_item_groups_dict():
 	item_groups_list = frappe.get_all("Item Group", fields=("name", "is_group", "lft", "rgt"))
-	return { (i['lft'],i['rgt']):{'name':i['name'], 'is_group':i['is_group']}
-		for i in item_groups_list }
+	return {(i['lft'],i['rgt']):{'name':i['name'], 'is_group':i['is_group']}
+		for i in item_groups_list}
 
 
 def update_leveled_dict(leveled_dict):
-	for k in leveled_dict: leveled_dict[k].update({'self_value':0, 'agg_value':0})
+	for k in leveled_dict:
+		leveled_dict[k].update({'self_value':0, 'agg_value':0})