---
title: ProviderV1 (v1.0)
description: API reference for qiskit.providers.ProviderV1 in qiskit v1.0
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/qiskit/1.0/qiskit.providers.ProviderV1
---

# ProviderV1

*class* `qiskit.providers.ProviderV1`

[GitHub](https://github.com/Qiskit/qiskit/tree/stable/1.0/qiskit/providers/provider.py#L32-L79)

Bases: [`Provider`](/docs/api/qiskit/1.0/qiskit.providers.Provider "qiskit.providers.provider.Provider"), [`ABC`](https://docs.python.org/3/library/abc.html#abc.ABC)

Base class for a Backend Provider.

## Attributes

### version

Default value: `1`

## Methods

### backends

*abstract* `backends(name=None, **kwargs)`

[GitHub](https://github.com/Qiskit/qiskit/tree/stable/1.0/qiskit/providers/provider.py#L59-L71)

Return a list of backends matching the specified filtering.

**Parameters**

- **name** ([*str*](https://docs.python.org/3/library/stdtypes.html#str)) – name of the backend.
- **\*\*kwargs** – dict used for filtering.

**Returns**

**a list of Backends that match the filtering**

criteria.

**Return type**

[list](https://docs.python.org/3/library/stdtypes.html#list)\[[Backend](/docs/api/qiskit/1.0/qiskit.providers.Backend "qiskit.providers.Backend")]

### get\_backend

`get_backend(name=None, **kwargs)`

[GitHub](https://github.com/Qiskit/qiskit/tree/stable/1.0/qiskit/providers/provider.py#L37-L57)

Return a single backend matching the specified filtering.

**Parameters**

- **name** ([*str*](https://docs.python.org/3/library/stdtypes.html#str)) – name of the backend.
- **\*\*kwargs** – dict used for filtering.

**Returns**

a backend matching the filtering.

**Return type**

[Backend](/docs/api/qiskit/1.0/qiskit.providers.Backend "qiskit.providers.Backend")

**Raises**

[**QiskitBackendNotFoundError**](/docs/api/qiskit/1.0/providers#qiskit.providers.QiskitBackendNotFoundError "qiskit.providers.QiskitBackendNotFoundError") – if no backend could be found or more than one backend matches the filtering criteria.