---
title: ChunkSpan (latest version)
description: API reference for samplomatic.quantum_program.ChunkSpan in the latest version of samplomatic
source: https://quantum.cloud.ibm.com/docs/en/api/samplomatic/auto/quantum-program-chunk-span
---

# ChunkSpan

*class* `samplomatic.quantum_program.ChunkSpan(start: datetime, stop: datetime, parts: list[ChunkPart])`

[GitHub](https://github.com/Qiskit/samplomatic/tree/main/samplomatic/quantum_program/quantum_program_result.py#L43-L59)

Bases: [`object`](https://docs.python.org/3/builtins/functions.html#object)

Timing information about a single chunk of execution.

> **Note**
>
> This span may include some amount of non-circuit time.

**Attributes Summary**

|                                                                                                       |                                                                                |
| ----------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------ |
| [`parts`](#samplomatic.quantum_program.ChunkSpan.parts "samplomatic.quantum_program.ChunkSpan.parts") | A description of which parts of a quantum program are contained in this chunk. |
| [`start`](#samplomatic.quantum_program.ChunkSpan.start "samplomatic.quantum_program.ChunkSpan.start") | The start time of the execution chunk in UTC.                                  |
| [`stop`](#samplomatic.quantum_program.ChunkSpan.stop "samplomatic.quantum_program.ChunkSpan.stop")    | The stop time of the execution chunk in UTC.                                   |

**Attributes Documentation**

### parts

Type: [`list`](https://docs.python.org/3/builtins/stdtypes.html#list)\[[`ChunkPart`](/docs/api/samplomatic/auto/quantum-program-chunk-part "samplomatic.quantum_program.quantum_program_result.ChunkPart")]

Default value: `<dataclasses._MISSING_TYPE object>`

A description of which parts of a quantum program are contained in this chunk.

### start

Type: [`datetime`](https://docs.python.org/3/library/datetime.html#datetime.datetime)

Default value: `<dataclasses._MISSING_TYPE object>`

The start time of the execution chunk in UTC.

### stop

Type: [`datetime`](https://docs.python.org/3/library/datetime.html#datetime.datetime)

Default value: `<dataclasses._MISSING_TYPE object>`

The stop time of the execution chunk in UTC.