class_docstr: Wrapper class around underlying C implementation.
class_docstr_tok: ["Wrapper","class","around","underlying","C","implementation","."]
code: def num_ctx_switches(self):
      # Unvoluntary value seems not to be available;
      # getrusage() numbers seems to confirm this theory.
      # We set it to 0.
      vol = self._get_pidtaskinfo()[pidtaskinfo_map["volctxsw"]]
      return _common.pctxsw(vol, 0)
  
imports: import contextlib
  import errno
  import functools
  import os
  from collections import namedtuple
  from .None import _common
  from .None import _psposix
  from .None import _psutil_osx
  from .None import _psutil_posix
  from ._common import AccessDenied
  from ._common import conn_tmap
  from ._common import conn_to_ntuple
  from ._common import isfile_strict
  from ._common import memoize_when_activated
  from ._common import NoSuchProcess
  from ._common import parse_environ_block
  from ._common import usage_percent
  from ._common import ZombieProcess
  from ._compat import PermissionError
  from ._compat import ProcessLookupError
label_desc: Use image node_id 19 for calling the Process obj's underlying member method code with example usage: obj.num_ctx_switches() and returns: _common