def __init__(self,
wires,
provider=None,
backend="ibmq_qasm_simulator",
shots=1024,
**kwargs):
token = os.getenv("IBMQX_TOKEN") or kwargs.get("ibmqx_token", None)
url = os.getenv("IBMQX_URL") or kwargs.get("ibmqx_url", None)
# Specify a single hub, group and project
hub = kwargs.get("hub", "ibm-q")
group = kwargs.get("group", "open")
project = kwargs.get("project", "main")
if token is not None:
# token was provided by the user, so attempt to enable an
# IBM Q account manually
ibmq_kwargs = {"url": url} if url is not None else {}
IBMQ.enable_account(token, **ibmq_kwargs)
else:
# check if an IBM Q account is already active.
#
# * IBMQ v2 credentials stored in active_account().
# If no accounts are active, it returns None.
if IBMQ.active_account() is None:
# no active account
try:
# attempt to load a v2 account stored on disk
IBMQ.load_account()
except IBMQAccountError:
# attempt to enable an account manually using
# a provided token
raise IBMQAccountError(
"No active IBM Q account, and no IBM Q token provided."
) from None
# IBM Q account is now enabled
# get a provider
p = provider or IBMQ.get_provider(
hub=hub, group=group, project=project)
super().__init__(wires=wires,
provider=p,
backend=backend,
shots=shots,
**kwargs)
def _wrapper(self, *args, **kwargs): # type: ignore
# The special case of load_accounts is here for backward
# compatibility when using v2 credentials.
if self._credentials and func.__name__ != 'load_accounts':
raise IBMQAccountError(
'IBMQ.{}() is not available when using an IBM Q Experience '
'v2 account. Please use IBMQ.{}() (note the singular form) '
'instead.'.format(func.__name__, func.__name__[:-1]))
warnings.warn(
'IBMQ.{}() is being deprecated. Please use IBM Q Experience v2 '
'credentials and IBMQ.{}() (note the singular form) instead. You can '
'find the instructions to make the updates here: \n'
'https://github.com/Qiskit/qiskit-ibmq-provider#updating-to-the-new-ibm-q-experience'
.format(func.__name__, func.__name__[:-1]), DeprecationWarning)
return func(self, *args, **kwargs)
def __init__(self, wires, provider=None, backend="ibmq_qasm_simulator", shots=1024, **kwargs):
token = os.getenv("IBMQX_TOKEN") or kwargs.get("ibmqx_token", None)
url = os.getenv("IBMQX_URL") or kwargs.get("ibmqx_url", None)
if token is not None:
# token was provided by the user, so attempt to enable an
# IBM Q account manually
ibmq_kwargs = {"url": url} if url is not None else {}
IBMQ.enable_account(token, **ibmq_kwargs)
else:
# turn off deprecation warnings
# TODO: remove IBM Q v1 API calls when fully deprecated
with warnings.catch_warnings():
warnings.filterwarnings("ignore", category=DeprecationWarning)
# check if an IBM Q account is already active.
#
# * IBMQ v1 credentials stored in active_accounts().
# If no accounts are active, it returns []
#
# * IBMQ v2 credentials stored in active_account().
# If no accounts are active, it returns None.
if IBMQ.active_account() is None and not IBMQ.active_accounts():
# no active account
try:
# attempt to load a v1 account stored on disk
IBMQ.load_accounts()
except IBMQAccountError:
try:
# attempt to load a v2 account stored on disk
IBMQ.load_account()
except IBMQAccountError:
# attempt to enable an account manually using
# a provided token
raise IBMQAccountError(
"No active IBM Q account, and no IBM Q token provided."
) from None
# IBM Q account is now enabled
# get a provider
p = provider or IBMQ.get_provider()
super().__init__(wires=wires, provider=p, backend=backend, shots=shots, **kwargs)
def connect(kwargs):
"""Function that allows connection to IBMQ.
Args:
kwargs(dict): dictionary that contains the token and the url"""
token = kwargs.get("ibmqx_token", None) or os.getenv("IBMQX_TOKEN")
url = kwargs.get("ibmqx_url", None) or os.getenv("IBMQX_URL")
# TODO: remove "no cover" when #173 is resolved
if token is not None: # pragma: no cover
# token was provided by the user, so attempt to enable an
# IBM Q account manually
def login():
ibmq_kwargs = {"url": url} if url is not None else {}
IBMQ.enable_account(token, **ibmq_kwargs)
active_account = IBMQ.active_account()
if active_account is None:
login()
else:
# There is already an active account:
# If the token is the same, do nothing.
# If the token is different, authenticate with the new account.
if active_account["token"] != token:
IBMQ.disable_account()
login()
else:
# check if an IBM Q account is already active.
#
# * IBMQ v2 credentials stored in active_account().
# If no accounts are active, it returns None.
if IBMQ.active_account() is None:
# no active account
try:
# attempt to load a v2 account stored on disk
IBMQ.load_account()
except IBMQAccountError:
# attempt to enable an account manually using
# a provided token
raise IBMQAccountError(
"No active IBM Q account, and no IBM Q token provided."
) from None