code: def identity(*_, **__):
      r"""Returns 1.
  
      Returns:
          tuple: the Fock state expectation and variance
      """
      return 1, 0
  
imports: import math
  import cmath
  import numpy
  from scipy.special import factorial
  import pennylane
  from pennylane.ops import Identity
  from pennylane import Device
  from .._version import __version__
label_desc: Use image node_id 24 for calling a global function with example usage: identity() and returns: int,  int