code: def permute_two_qubit_dm(dm):
      """Permute the two qubits of a density matrix by transposing."""
      return fn.reshape(
          fn.transpose(fn.reshape(dm, [2] * 4), [1, 0, 3, 2]), (4, 4)
      )
  
imports: import numpy
  import pytest
  from pennylane import numpy
  from pennylane import math
label_desc: Use image node_id 1 for calling a global function with example usage: permute_two_qubit_dm(dm) and returns: fn