def query_device(device_name) -> dict:
"""
Try to query the device from QCS. Return the lattice dict if it exists, or
or None otherwise.
"""
lattices = list_lattices()
if device_name in list(lattices.keys()):
return lattices[device_name]
return None
def main():
now = str(datetime.datetime.today())
for device in list_devices():
os.makedirs(os.path.join(device, now), exist_ok=True)
for lattice in map(get_lattice, list_lattices(device_name=device)):
print(lattice.name, file=sys.stderr)
with open(qpu_dir.format(device, now, lattice.name), 'w') as f:
json.dump(device_to_chipspec(lattice, timestamp=now),
f,
indent=2)
try:
os.unlink(f"{device}/latest")
except FileNotFoundError:
pass
os.symlink(f"{now}", f"{device}/latest")
def list_quantum_computers(connection: ForestConnection = None,
qpus: bool = True,
qvms: bool = True) -> List[str]:
"""
List the names of available quantum computers
:param connection: An optional :py:class:ForestConnection` object. If not specified,
the default values for URL endpoints will be used, and your API key
will be read from ~/.pyquil_config. If you deign to change any
of these parameters, pass your own :py:class:`ForestConnection` object.
:param qpus: Whether to include QPU's in the list.
:param qvms: Whether to include QVM's in the list.
"""
if connection is None:
connection = ForestConnection()
qc_names: List[str] = []
if qpus:
qc_names += list(list_lattices(connection=connection).keys())
if qvms:
qc_names += ['9q-square-qvm', '9q-square-noisy-qvm']
return qc_names
