# tensorflow::ops::ReaderReadUpTo Class Reference

# tensorflow::ops::ReaderReadUpTo

`#include <io_ops.h>`

Returns up to `num_records` (key, value) pairs produced by a Reader.

## Summary

Will dequeue from the input queue if necessary (e.g. when the Reader needs to start reading from a new file since it has finished with the previous file). It may return less than `num_records` even before the last batch.

Arguments:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- reader_handle: Handle to a `Reader`.
- queue_handle: Handle to a `Queue`, with string work items.
- num_records: number of records to read from `Reader`.

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` keys: A 1-D tensor.
- `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` values: A 1-D tensor.

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/reader-read-up-to#classtensorflow_1_1ops_1_1_reader_read_up_to_1a2ec15832620e45ab0ea0a17f650cb1f5(const ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input reader_handle, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input queue_handle, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input num_records)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/reader-read-up-to#classtensorflow_1_1ops_1_1_reader_read_up_to_1af7a8295467508f82a27607fc8f67ed71` | `::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/reader-read-up-to#classtensorflow_1_1ops_1_1_reader_read_up_to_1a5b7389ad7ab4f4d1dc2c976d3dd52e9e` | `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/reader-read-up-to#classtensorflow_1_1ops_1_1_reader_read_up_to_1abb8bf94a488824b08dc38f935f62a0be` | `::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |

## Public attributes

### keys

```
::tensorflow::Output keys
```

### operation

```
Operation operation
```

### values

```
::tensorflow::Output values
```

## Public functions

### ReaderReadUpTo

```
 ReaderReadUpTo(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input reader_handle,
  ::tensorflow::Input queue_handle,
  ::tensorflow::Input num_records
)
```