Returns an identifier string for the PauliTerm (ignoring the coefficient).
Don’t use this to compare terms. This function will not work with qubits that aren’t sortable.
Parameters: sort_ops – Whether to sort operations by qubit. This is True by default for backwards compatibility but will change in a future version. Callers should never rely on comparing id’s for testing equality. See
Returns: A string representation of this term’s operations. Return type: string