from struct import unpack

class KaitaiStruct:
  def read_u1(self):
    return unpack('B', self._io.read(1))[0]

from struct import unpack

class KaitaiStruct:
    def close(self):
        self._io.close()

    def read_u1(self):
        return unpack('B', self._io.read(1))[0]

Fix formatting as per PEP8
Fix formatting as per PEP8
