Django测试终端输出

Question

我正在使用硒进行django测试。一切都工作正常但是当我看到终端时它会返回输出“无”和“3”，如图所示

我想删除那些因为它在运行这么多测试时占用太多空间。

我正在使用python 3.5.1和djnago 1.9.1

我的测试代码是：

//Set flag
$flag = 0;
if(isset($_POST['books'])){
    $books_ids = $_POST["books"];
    $flag += 1;
}
if(isset($_POST['authors'])){
    $authors_ids = $_POST["authors"];
    $flag += 10;
}
if(isset($_POST['stores'])){
    $stores_ids = $_POST["stores"];
    $flag += 100;
}
echo $flag. " <BR>";//Remove after testing

//Basic SQL statement 
$query = "SELECT
        b.id,
        b.`name`,
        b.`year`,
        GROUP_CONCAT(DISTINCT a.`name`) AS author_names,
        GROUP_CONCAT(DISTINCT s.`name`) AS store_names,
        'book' as param
    FROM
        books AS b
        LEFT JOIN books_authors AS b_a ON b.id = b_a.book_id
        LEFT JOIN authors AS a ON a.id = b_a.author_id
        LEFT JOIN books_stores AS b_s ON b.id = b_s.book_id
        LEFT JOIN stores AS s ON s.id = b_s.store_id ";
// Set initial condition to WHERE       
$clause = "WHERE";      

if( !empty( $books_ids ))
{
    $books_ids_in = implode(',', array_fill(0, count($books_ids), '?'));
    $query .= $clause;
    $query .= " b.id IN (". $books_ids_in .")";
    // Set condition to OR for additional condition
    $clause = " OR ";   
}
if( !empty( $authors_ids ) )
{
    $authors_ids_in = implode(',', array_fill(0, count($authors_ids), '?'));

    /*  This part commented out as I don't see relevance
        if (!empty($query)) {
         $query .= " UNION ";
    }
    */
    $query .= $clause;
    $query .= "    b.id IN (
            SELECT DISTINCT book_id FROM books_authors WHERE author_id IN (". $authors_ids_in .")
            )";
    // Set condition to OR for additional condition     
    $clause = " OR ";       

}


if( !empty( $stores_ids ) )
{
    $stores_ids_in = implode(',', array_fill(0, count($stores_ids), '?'));

    /* if (!empty($query)) {
         $query .= " UNION ";
    }
    */
    $query .= $clause;
    $query .= " b.id IN (
            SELECT DISTINCT book_id FROM books_stores WHERE store_id IN (". $stores_ids_in .")
            )";
    $clause = " OR ";
}

//Add GROUP & ORDER
    $query .= " GROUP BY b.id
    ORDER BY b.id";
echo $query; //Remove after testing
//building $param_array
switch ($flag) {
    case 1:
        $param_array = $books_ids;
        break;
    case 10:
        $param_array = $authors_ids;
        break;
    case 100:
        $param_array = $stores_ids;
        break;
    case 11://books & authors
        $param_array = array_merge($books_ids, $authors_ids); 
        break;
    case 101://books & stores
        $param_array = array_merge($books_ids, $stores_ids); 
        break;
    case 110://authors & stores
        $param_array = array_merge($authors_ids, $stores_ids); 
        break;
     case 111://books & authors & stores
        $param_array = array_merge(array_merge($books_ids,$authors_ids),$stores_ids);
        break;  

}
echo "<br>";
print_r($param_array);// remove after testing
/*
if( !empty( $query )) {
    $stmt = $conn->prepare($query); 
    $stmt->execute($param_array);
    $results = $stmt->fetchAll();
    echo json_encode($results);
}

$conn = null;