def _to_label(pauli, phase):
"""Return the Pauli stabilizer string from symplectic representation."""
# pylint: disable=arguments-differ
# Cast in symplectic representation
# This should avoid a copy if the pauli is already a row
# in the symplectic table
label = PauliTable._to_label(pauli)
if phase:
return '-' + label
return '+' + label
def __getitem__(self, key):
coeff = self.obj.coeffs[key]
pauli = PauliTable._to_label(self.obj.table.array[key])
return (pauli, coeff)
