code: def PortPathMatcher(cls, port_path):
          
          if isinstance(port_path, str):
              # Convert from sysfs path to port_path.
              port_path = [int(part) for part in SYSFS_PORT_SPLIT_RE.split(port_path)]
          return lambda device: device.port_path == port_path
docs: Returns a device matcher for the given port path.