class_docstr: A class for managing multiple kernels.
class_docstr_tok: ["A","class","for","managing","multiple","kernels","."]
docstr: Is the kernel alive.
  
  This calls KernelManager.is_alive() which calls Popen.poll on the
  actual kernel subprocess.
  
  Parameters
  ==========
  kernel_id : uuid
      The id of the kernel.
code: def is_alive(self, kernel_id):
      """Is the kernel alive.
  
      This calls KernelManager.is_alive() which calls Popen.poll on the
      actual kernel subprocess.
  
      Parameters
      ==========
      kernel_id : uuid
          The id of the kernel.
      """
  
imports: from __future__ import absolute_import
  import os
  import uuid
  import zmq
  from traitlets.config.configurable import LoggingConfigurable
  from ipython_genutils.importstring import import_item
  from traitlets import Any, Bool, Dict, DottedObjectName, Instance, Unicode, default, observe
  from ipython_genutils.py3compat import unicode_type
  from .kernelspec import NATIVE_KERNEL_NAME, KernelSpecManager
label_desc: Use image node_id 19 for calling the MultiKernelManager obj's underlying member method code with example usage: obj.is_alive(kernel_id) without return types