code: def qnode(n_wires):
      """Hadamard gate on all wires"""
      for i in range(n_wires):
          qml.Hadamard(i)
      return qml.classical_shadow(wires=range(n_wires))
  
imports: import pytest
  import numpy
  import pennylane
  import pennylane.numpy
  from pennylane.shadows import ClassicalShadow, median_of_means, pauli_expval
label_desc: Use image node_id 1 for calling a global function with example usage: qnode(n_wires) and returns: qml