Return the Pauli group with 4^n elements.
The phases have been removed. case ‚weight‘ is ordered by Pauli weights and case ‚tensor‘ is ordered by I,X,Y,Z counting lowest qubit fastest.
number_of_qubits (int) – number of qubits
case (str) – determines ordering of group elements (‚weight‘ or ‚tensor‘)
list of Pauli objects
QiskitError – case is not ‚weight‘ or ‚tensor‘
QiskitError – number_of_qubits is larger than 4