# tensorflow::ops::DynamicPartition Class Reference

# tensorflow::
ops::
DynamicPartition

`
#include <data_flow_ops.h>
`


Partitions
`
data
`
into
`
num_partitions
`
tensors using indices from
`
partitions
`
.

## Summary


For each index tuple
`
js
`
of size
`
partitions.ndim
`
, the slice
`
data[js, ...]
`
becomes part of
`
outputs[partitions[js]]
`
. The slices with
`
partitions[js] = i
`
are placed in
`
outputs[i]
`
in lexicographic order of
`
js
`
, and the first dimension of
`
outputs[i]
`
is the number of entries in
`
partitions
`
equal to
`
i
`
. In detail,


```
    outputs[i].shape = [sum(partitions == i)] + data.shape[partitions.ndim:]
```

<br />


```
    outputs[i] = pack([data[js, ...] for js if partitions[js] == i])
```

<br />


`
data.shape
`
must start with
`
partitions.shape
`
.


For example:


```
    # Scalar partitions.
    partitions = 1
    num_partitions = 2
    data = [10, 20]
    outputs[0] = []  # Empty with shape [0, 2]
    outputs[1] = [[10, 20]]
```

<br />


```
    # Vector partitions.
    partitions = [0, 0, 1, 1, 0]
    num_partitions = 2
    data = [10, 20, 30, 40, 50]
    outputs[0] = [10, 20, 50]
    outputs[1] = [30, 40]
```

<br />


See
`
dynamic_stitch
`
for an example on how to merge partitions back.


![](https://www.tensorflow.org/static/versions/r2.5/api_docs/cc/images/DynamicPartition.png)

<br />


Args:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- partitions: [Any](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/any#classtensorflow_1_1ops_1_1_any) shape. Indices in the range `
  [0, num_partitions)
  ` .
- num_partitions: The number of partitions to output.

<br />


Returns:

- `
  OutputList
  ` : The outputs tensor.

<br />

| ### Constructors and Destructors ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/dynamic-partition#classtensorflow_1_1ops_1_1_dynamic_partition_1a3054ef5ab4e012816521a61a98ff1cb8 (const :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input data, :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input partitions, int64 num_partitions) ` ||

| ### Public attributes ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/dynamic-partition#classtensorflow_1_1ops_1_1_dynamic_partition_1ae34cf25c6a4f479e6eab33dd8d6c7bca ` | ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation ` |
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/dynamic-partition#classtensorflow_1_1ops_1_1_dynamic_partition_1ac93870bad9fb8ccd554d368930d608c0 ` | ` :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/group/core#group__core_1gab449e6a3abd500c2f4ea93f9e89ba96c ` |

| ### Public functions ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/dynamic-partition#classtensorflow_1_1ops_1_1_dynamic_partition_1a69567b14d471387c73d2e2240c59d645 (size_t index) const ` | ` :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output ` |

## Public attributes

### operation

```
Operation operation
```

### outputs

```
::tensorflow::OutputList outputs
```

## Public functions

### DynamicPartition

```
 DynamicPartition(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input data,
  ::tensorflow::Input partitions,
  int64 num_partitions
)
```

### operator\[\]

```
::tensorflow::Output operator[](
  size_t index
) const 
```