docstr: Returns the fan speed percentage (0-100) of maximum intended speed
  as an integer, or None if the information is not available.
docstr_tok: ["Returns","the","fan","speed","percentage","(","0-100",")","of","maximum","intended","speed","as","an","integer",",","or","None","if","the","information","is","not","available","."]
code: def fan_speed(self):
      """
      Returns the fan speed percentage (0-100) of maximum intended speed
      as an integer, or None if the information is not available.
      """
      v = self.entry["fan.speed"]
      return int(v) if v is not None else None
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import json
  import platform
  import sys
  from datetime import datetime
  import psutil
  from ..gpu import pynvml
label_desc: Use image node_id 12 for calling the GPUStat obj's underlying member method code with example usage: obj.fan_speed() and returns: unknown