# UnnestFrame class
UnnestFrame

Unnests a `DynamicFrame`, flattens nested objects to top-level elements, and generates join keys for array objects.

## Example
Example

We recommend that you use the [`DynamicFrame.unnest()`](aws-glue-api-crawler-pyspark-extensions-dynamic-frame.md#aws-glue-api-crawler-pyspark-extensions-dynamic-frame-unnest) method to flatten nested structures in a `DynamicFrame`. To view a code example, see [Example: Use unnest to turn nested fields into top-level fields](aws-glue-api-crawler-pyspark-extensions-dynamic-frame.md#pyspark-unnest-example).

## Methods
 — methods —
+ [\$1\$1call\$1\$1](#aws-glue-api-crawler-pyspark-transforms-UnnestFrame-__call__)
+ [apply](#aws-glue-api-crawler-pyspark-transforms-UnnestFrame-apply)
+ [name](#aws-glue-api-crawler-pyspark-transforms-UnnestFrame-name)
+ [describeArgs](#aws-glue-api-crawler-pyspark-transforms-UnnestFrame-describeArgs)
+ [describeReturn](#aws-glue-api-crawler-pyspark-transforms-UnnestFrame-describeReturn)
+ [describeTransform](#aws-glue-api-crawler-pyspark-transforms-UnnestFrame-describeTransform)
+ [describeErrors](#aws-glue-api-crawler-pyspark-transforms-UnnestFrame-describeErrors)
+ [describe](#aws-glue-api-crawler-pyspark-transforms-UnnestFrame-describe)

## \$1\$1call\$1\$1(frame, transformation\$1ctx = "", info="", stageThreshold=0, totalThreshold=0)
\$1\$1call\$1\$1

Unnests a `DynamicFrame`, flattens nested objects to top-level elements, and generates join keys for array objects.
+ `frame` – The `DynamicFrame` to unnest (required).
+ `transformation_ctx` – A unique string that is used to identify state information (optional).
+ `info` – A string associated with errors in the transformation (optional).
+ `stageThreshold` – The maximum number of errors that can occur in the transformation before it errors out (optional). The default is zero.
+ `totalThreshold` – The maximum number of errors that can occur overall before processing errors out (optional). The default is zero.

## apply(cls, \$1args, \$1\$1kwargs)
apply

Inherited from `GlueTransform` [apply](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-apply).

## name(cls)
name

Inherited from `GlueTransform` [name](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-name).

## describeArgs(cls)
describeArgs

Inherited from `GlueTransform` [describeArgs](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describeArgs).

## describeReturn(cls)
describeReturn

Inherited from `GlueTransform` [describeReturn](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describeReturn).

## describeTransform(cls)
describeTransform

Inherited from `GlueTransform` [describeTransform](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describeTransform).

## describeErrors(cls)
describeErrors

Inherited from `GlueTransform` [describeErrors](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describeErrors).

## describe(cls)
describe

Inherited from `GlueTransform` [describe](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describe).