code: def _syspath(dev):
      '''
      Full SysFS path of a device
      '''
      dev = _devbase(dev)
      dev = re.sub(r'^([vhs][a-z]+)([0-9]+)', r'\1/\1\2', dev)
  
      # name = re.sub(r'^([a-z]+)(?<!(bcache|md|dm))([0-9]+)', r'\1/\1\2', name)
      return os.path.join('/sys/block/', devf _syspath(dev):
      '''
      Full SysFS path of a device
      '''
      dev = _devbase(dev)
      dev = re.sub(r'^([vhs][a-z]+)([0-9]+)', r'\1/\1\2', dev)
  
      # name = re.sub(r'^([a-z]+)(?<!(bcache|md|dm))([0-9]+)', r'\1/\1\2', name)
      return os.path.join('/sys/block/', dev)
docs: Full SysFS path of a device