QiskitBackendNotFoundError occurs if I registered both credentials of Q Experience and Q Console

Informations

• Qiskit version: 0.7.2
• Python version: 3.6.8
• Operating system: macOS HighSierra

What is the current behavior?

I have both Q Experience and Q Console accounts and registered them to IBMQ. Then, because both systems have a backend with the same name “ibmq_qasm_simulator”, QiskitBackendNotFoundError occurs.

Steps to reproduce the problem

$ python
>>> from qiskit import IBMQ
>>> IBMQ.load_accounts()
>>> print(IBMQ.backends())
[<IBMQBackend('ibmq_20_tokyo') from IBMQ(xxx, yyy, zzz)>,
 <IBMQBackend('ibmq_qasm_simulator') from IBMQ(xxx, yyy, zzz)>,
 <IBMQBackend('ibmqx4') from IBMQ()>,
 <IBMQBackend('ibmqx2') from IBMQ()>,
 <IBMQBackend('ibmq_16_melbourne') from IBMQ()>,
 <IBMQBackend('ibmq_qasm_simulator') from IBMQ()>]
>>> IBMQ.get_backend('ibmq_qasm_simulator')
QiskitBackendNotFoundError                Traceback (most recent call last)
----> 1 IBMQ.get_backend('ibmq_qasm_simulator')
~/envs/test/lib/python3.6/site-packages/qiskit/providers/baseprovider.py in get_backend(self, name, **kwargs)
     42         backends = self.backends(name, **kwargs)
     43         if len(backends) > 1:
---> 44             raise QiskitBackendNotFoundError('More than one backend matches the criteria')
     45         elif not backends:
     46             raise QiskitBackendNotFoundError('No backend matches the criteria')

QiskitBackendNotFoundError: 'More than one backend matches the criteria'

What is the expected behavior?

Users can choose “ibmq_qasm_simulator” on Q Experience or Q Console.

Suggested solutions

Change the backend name “ibmq_qasm_simulator” on Q Console.

[nonhermitian]

That device is no longer operational. You will need to select a different one from those listed here: https://quantum-computing.ibm.com/services?services=systems

[jaygambetta]

In the qiskit provider tutorial we show how to do this. Grab by hub or user account. For quantum experience set hub equal to none.