Update utils.py
diff --git a/erpnext/accounts/utils.py b/erpnext/accounts/utils.py
index 9ed8674..6617802 100644
--- a/erpnext/accounts/utils.py
+++ b/erpnext/accounts/utils.py
@@ -494,7 +494,8 @@
 	value = frappe.db.get_value("Company", company, fieldname)
 
 	if not value:
-		throw(_("Please set default {0} in Company {1}").format(frappe.get_meta("Company").get_label(fieldname), company))
+		throw(_("Please set default {0} in Company {1}")
+		      .format(frappe.get_meta("Company").get_label(fieldname), company))
 
 	return value
 
@@ -621,7 +622,8 @@
 			'invoice_amount': flt(d.invoice_amount),
 			'payment_amount': flt(d.payment_amount),
 			'outstanding_amount': flt(d.invoice_amount - d.payment_amount, precision),
-			'due_date': frappe.db.get_value(d.voucher_type, d.voucher_no, "posting_date") if party_type=="Employee" else frappe.db.get_value(d.voucher_type, d.voucher_no, "due_date"),
+			'due_date': frappe.db.get_value(d.voucher_type, d.voucher_no, 
+				"posting_date" if party_type=="Employee" else "due_date"),
 		}))
 
 	outstanding_invoices = sorted(outstanding_invoices, key=lambda k: k['due_date'] or getdate(nowdate()))