Untitled

def repr(self):
return '<Invoice {} - {} - {} - {} - {} - {} - {} - {} - {} - {} - {} - {} - {} - {} - {}>'.format(self.invoice_number, self.date, self.customer_name, self.customer_address, self.customer_email, self.customer_number, self.sl_no, self.description, self.quantity, self.rate, self.amount, self.sub_total, self.discount, self.tax, self.total)