code: def _check_copy(op):
      """Check that copies and deep copies give identical objects."""
      copied_op = copy.copy(op)
      assert qml.equal(
          copied_op, op
      ), "copied op must be equal with qml.equal"
      assert (
          copied_op == op
      ), "copied op must be equivalent to original operation"
      assert (
          copied_op is not op
      ), "copied op must be a separate instance from original operaiton"
      assert qml.equal(
          copy.deepcopy(op), op
      ), "deep copied op must also be equal"
  
file_path: pennylane/pennylane/ops/functions/assert_valid.py
imports: from string import ascii_lowercase
  import copy
  import pickle
  import numpy
  import pennylane
  from pennylane.operation import EigvalsUndefinedError
label_desc: Use image node_id 6 for calling a global function with example usage: _check_copy(op) without return types