---
title: FakeQasmSimulator (v0.46)
description: API reference for qiskit.providers.fake_provider.FakeQasmSimulator in qiskit v0.46
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/qiskit/0.46/qiskit.providers.fake_provider.FakeQasmSimulator
---

# FakeQasmSimulator

*class* `qiskit.providers.fake_provider.FakeQasmSimulator`

[GitHub](https://github.com/qiskit/qiskit/tree/stable/0.46/qiskit/providers/fake_provider/fake_qasm_simulator.py)

Bases: [`FakeBackend`](/docs/api/qiskit/0.46/providers_fake_provider#qiskit.providers.fake_provider.FakeBackend "qiskit.providers.fake_provider.fake_backend.FakeBackend")

A fake simulator backend.

> **Deprecated since version 0.46.0**
>
> The class `qiskit.providers.fake_provider.fake_qasm_simulator.FakeQasmSimulator` is deprecated as of qiskit 0.46.0. It will be removed in qiskit 1.0. Use the qiskit.providers.basic\_provider.BasicSimulator class instead.

## Attributes

### options

Return the options for the backend

The options of a backend are the dynamic parameters defining how the backend is used. These are used to control the [`run()`](#qiskit.providers.fake_provider.FakeQasmSimulator.run "qiskit.providers.fake_provider.FakeQasmSimulator.run") method.

### version

Default value: `1`

## Methods

### configuration

`configuration()`

Return the backend configuration.

**Returns**

the configuration for the backend.

**Return type**

[BackendConfiguration](/docs/api/qiskit/0.46/qiskit.providers.models.BackendConfiguration "qiskit.providers.models.BackendConfiguration")

### name

`name()`

Return the backend name.

**Returns**

the name of the backend.

**Return type**

[str](https://docs.python.org/3/library/stdtypes.html#str)

### properties

`properties()`

Return backend properties

### provider

`provider()`

Return the backend Provider.

**Returns**

the Provider responsible for the backend.

**Return type**

[Provider](/docs/api/qiskit/0.46/qiskit.providers.Provider "qiskit.providers.Provider")

### run

`run(run_input, **kwargs)`

Main job in simulator

### set\_options

`set_options(**fields)`

Set the options fields for the backend

This method is used to update the options of a backend. If you need to change any of the options prior to running just pass in the kwarg with the new value for the options.

**Parameters**

**fields** – The fields to update the options

**Raises**

[**AttributeError**](https://docs.python.org/3/library/exceptions.html#AttributeError) – If the field passed in is not part of the options

### status

`status()`

Return the backend status.

**Returns**

the status of the backend.

**Return type**

[BackendStatus](/docs/api/qiskit/0.46/qiskit.providers.models.BackendStatus "qiskit.providers.models.BackendStatus")