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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def write_eof(self):
 """Shut down the write direction of the transport."""

        self._check_status()
        if not self._writable:
            raise TransportError('transport is not writable')
        if self._closing:
            raise TransportError('transport is closing')
        try:
            self._handle.shutdown(self._on_write_complete)
        except pyuv.error.UVError as e:
            self._error = TransportError.from_errno(e.args[0])
            self.abort()
            raise compat.saved_exc(self._error)
        self._write_buffer_size += 1