def registered_providers():
"""Return the currently registered providers.
.. deprecated:: 0.6+
After 0.6, this function is deprecated. Please use the methods in
`qiskit.IBMQ` instead (`list_accounts()`).
"""
warnings.warn(
'registered_providers() will be deprecated after 0.6. Please '
'use the qiskit.IBMQ.list_accounts() method instead.',
DeprecationWarning)
return IBMQ.list_accounts()
