qiskit.providers.ibmq.IBMQBackendService.backends¶

IBMQBackendService.backends(name=None, filters=None, timeout=None, min_num_qubits=None, input_allowed=None, **kwargs)[source]¶

Return all backends accessible via this provider, subject to optional filtering.

Parameters

name (Optional[str]) – Backend name to filter by.
filters (Optional[Callable[[List[IBMQBackend]], bool]]) –
More complex filters, such as lambda functions. For example:
```
AccountProvider.backends(
    filters=lambda b: b.configuration().quantum_volume > 16)
```
timeout (Optional[float]) – Maximum number of seconds to wait for the discovery of remote backends.
min_num_qubits (Optional[int]) – Minimum number of qubits the backend has to have.
input_allowed (Union[str, List[str], None]) – Filter by the types of input the backend supports. Valid input types are job (circuit job) and runtime (Qiskit Runtime). For example, inputs_allowed='runtime' will return all backends that support Qiskit Runtime. If a list is given, the backend must support all types specified in the list.
kwargs (Any) –
Simple filters that specify a True/False criteria in the backend configuration, backends status, or provider credentials. An example to get the operational backends with 5 qubits:
```
AccountProvider.backends(n_qubits=5, operational=True)
```

Return type

List[IBMQBackend]

Returns

The list of available backends that match the filter.