def billing_return_refund(cls, account='ADMIN', order_nos=[]):
"""
生成退款账单
:param account:
:param order_nos:
:return:
"""
# 退款申请
refund_apply_no = RefundAction.refund_apply(account=account, order_nos=order_nos)
refund_apply_nos = list()
refund_apply_nos.append(refund_apply_no)
sleep(tmsBase.wait_time)
# 退货确认
BillingAction.billing_confirm_refund(account=account, refund_apply_nos=refund_apply_nos)
sleep(tmsBase.wait_time)
refund_bill_id = BillingUtil.billing_get_billId_by_apply_no(refund_apply_no)[0]
print u'退款账单号：%s' % refund_bill_id
refund_bill_ids = list()
refund_bill_ids.append(refund_bill_id)
BillingAction.billing_audit_refund(account=account, billing_order_ids=refund_bill_ids)
BillingAction.billing_deduct_refund(account=account, billing_order_ids=refund_bill_ids)
return refund_bill_id