code: def random_identity_search(gate_list, numgates, nqubits):
      """Randomly selects numgates from gate_list and checks if it is
      a gate identity.
  
      If the circuit is a gate identity, the circuit is returned;
      Otherwise, None is returned.
      """
  
      gate_size = len(gate_list)
      circuit = ()
  
      for i in range(numgates):
          next_gate = gate_list[randint(0, gate_size - 1)]
          circuit = circuit + (next_gate,)
  
      is_scalar = is_scalar_matrix(circuit, nqubits, False)
  
      return circuit if is_scalar else None
  
imports: from collections import deque
  from sympy.core.random import randint
  from sympy.external import import_module
  from sympy.core.basic import Basic
  from sympy.core.mul import Mul
  from sympy.core.numbers import Number, equal_valued
  from sympy.core.power import Pow
  from sympy.core.singleton import S
  from sympy.physics.quantum.represent import represent
  from sympy.physics.quantum.dagger import Dagger
label_desc: Use image node_id 13 for calling a global function with example usage: random_identity_search(gate_list, numgates, nqubits) and returns: unknown