Question

我有一个名为$ products的数组：

Traceback (most recent call last):
  File "whatever.py", line 21, in <module>
    df_redondeado = df.withColumn('columna_redondeada',round_column(df["Data"], df["Rounding"]))
  File "whomever\spark\spark-2.3.1-bin-hadoop2.7\python\pyspark\sql\dataframe.py", line 1848, in withColumn
    assert isinstance(col, Column), "col should be Column"
AssertionError: col should be Column

我想基于$ _GET [“ ID”]分配变量，例如$ title，$ price，$ Description等。即如果$ _GET [“ ID”]是外套，那么我想根据正确的产品规格分配变量。

我尝试过：

Array
(
[SpringJacket] => Array
    (

        [8] => Array
            (
                [OID] => 8
                [Title] => Blossom Spring Jacket
                [Description] => Random Description
                [Option] => 8
                [Price] => $289.99
            )

[Coat] => Array
    (

        [M] => Array
            (
                [OID] => M
                [Title] => Cordon Crombie Coat
                [Description] => Description
                [Option] => M
                [Price] => $199.99
            )

    )
)

但它说：

$title = $products[$_GET["ID"]]["Title"];
$price = $products[$_GET["ID"]]["Price"];
$ID = $products[$_GET["ID"]]["ID"];
$description = $products[$_GET["ID"]]["Description"];

其他所有相同的行号都相同。

PS：第18行是

Notice: Undefined index: Title on line 18

Answer 1

关于意外的$ options错误：

作为正确答案，您在$ options之前缺少分号。更正后出现其他错误时，请更新您的问题，包括导致错误的代码或提出新问题。

关于未定义索引错误：您的索引不正确。您引用$ products [一个ID] [标题]，而您的数组就像$ products [一个ID] [其他] [标题]

如何基于$ _GET数据从关联数组中获取价值

1 个答案: