code: def pauli_group(n_qubits, wire_map=None):
      """Generate the :math:`n`-qubit Pauli group.
  
      This function enables the construction of the :math:`n`-qubit Pauli group with no
      storage involved.  The :math:`n`-qubit Pauli group has size :math:`4^n`,
      thus it may not be desirable to construct it in full and store.
  
      The order of iteration is based on the binary symplectic representation of
      the Pauli group as :math:`2n`-bit strings. Ordering is done by converting
      the integers :math:`0` to :math:`2^{2n}` to binary strings, and converting those
      strings to Pauli operators using the :func:`~.binary_to_pauli` method.
  
      Args:
          n_qubits (int): The number of qubits for which to create the group.
          wire_map (dict[Union[str, int], int]): dictionary containing all wire labels
              used in the Pauli word as keys, and unique integer labels as their values.
              If no wire map is provided, wires will be labeled by integers between 0 and ``n_qubits``.
  
      Returns:
          .Operation: The next Pauli word in the group.
  
      **Example**
  
      The ``pauli_group`` generator can be used to loop over the Pauli group as follows.
      (Note: in the example below, we display only the first 5 elements for brevity.)
  
      >>> from pennylane.pauli import pauli_group
      >>> n_qubits = 3
      >>> for p in pauli_group(n_qubits):
      ...     print(p)
      ...
      Identity(wires=[0])
      PauliZ(wires=[2])
      PauliZ(wires=[1])
      PauliZ(wires=[1]) @ PauliZ(wires=[2])
      PauliZ(wires=[0])
  
      The full Pauli group can then be obtained like so:
  
      >>> full_pg = list(pauli_group(n_qubits))
  
      The group can also be created using a custom wire map; if no map is
      specified, a default map of label :math:`i` to wire ``i`` as in the example
      above will be created. (Note: in the example below, we display only the first
      5 elements for brevity.)
  
      >>> wire_map = {'a' : 0, 'b' : 1, 'c' : 2}
      >>> for p in pauli_group(n_qubits, wire_map=wire_map):
      ...     print(p)
      ...
      Identity(wires=['a'])
      PauliZ(wires=['c'])
      PauliZ(wires=['b'])
      PauliZ(wires=['b']) @ PauliZ(wires=['c'])
      PauliZ(wires=['a'])
  
      """
      # Cover the case where n_qubits may be passed as a float
      if isinstance(n_qubits, float):
          if n_qubits.is_integer():
              n_qubits = int(n_qubits)
  
      # If not an int, or a float representing a int, raise an error
      if not isinstance(n_qubits, int):
          raise TypeError(
              "Must specify an integer number of qubits to construct the Pauli group."
          )
  
      if n_qubits <= 0:
          raise ValueError(
              "Number of qubits must be at least 1 to construct Pauli group."
          )
  
      return _pauli_group_generator(n_qubits, wire_map=wire_map)
  
imports: from functools import lru_cache, reduce, singledispatch
  from itertools import product
  from typing import List, Union
  from warnings import warn
  import numpy
  import pennylane
  from pennylane.operation import Tensor
  from pennylane.ops import Hamiltonian, Identity, PauliX, PauliY, PauliZ, Prod, SProd
  from pennylane.tape import OperationRecorder
  from pennylane.wires import Wires
label_desc: Use image node_id 20 for calling a global function with example usage: pauli_group(n_qubits, wire_map) and returns: _pauli_group_generator