code: def poll(handle):
      """
      Polls an push_pull handle to determine whether underlying
      asynchronous operation has completed. After `poll()` returns `True`, `synchronize()`
      will return without blocking.
      Arguments:
          handle: A handle returned by an push_pull asynchronous
                  operation.
      Returns:
          A flag indicating whether the operation has completed.
      """
      return c_lib.byteps_torch_poll(handle) != 0
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from distutils.version import LooseVersion
  import torch
  from byteps.torch import c_lib
  from byteps.common import BytePSBasics
  from byteps.torch.compression import Compression
label_desc: Use image node_id 11 for calling a global function with example usage: poll(handle) and returns: unknown