def _qid_from_str(id_str: str) -> cirq.Qid:
"""Translates a qubit id string info cirq.Qid objects.
Tries to translate to GridQubit if possible (e.g. '4_3'), otherwise
falls back to using NamedQubit.
"""
try:
return v2.grid_qubit_from_proto_id(id_str)
except ValueError:
return v2.named_qubit_from_proto_id(id_str)
def test_named_qubit_from_proto_id():
assert v2.named_qubit_from_proto_id('a') == cirq.NamedQubit('a')
