In below example, I have written Python script for each tax group. see below python code in .py file :

  (tax_code_pos, base_code_pos, account_pos, tax_id)= (0, 1, 2, 3)

            for key, tax_amount in group_tax.items():
                tax = self.pool.get('account.tax').browse(cr, uid, key[tax_id], context=context)
                insert_data('tax', {
                    'name': _('Tax') + ' ' + tax.name,
                    'quantity': line.qty,
                    'product_id': line.product_id.id,
                    'account_id': key[account_pos] or income_account,
                    'credit': ((tax_amount>0) and tax_amount) or 0.0,
                    'debit': ((tax_amount<0) and -tax_amount) or 0.0,
                    'tax_code_id': key[tax_code_pos],
                    'tax_amount': tax_amount,
                    'partner_id': order.partner_id and self.pool.get("res.partner")._find_accounting_partner(order.partner_id).id or False
                })