lzma.py 文件源码

def readline(self, size=-1):
        """Read a line of uncompressed bytes from the file.

        The terminating newline (if present) is retained. If size is
        non-negative, no more than size bytes will be read (in which
        case the line may be incomplete). Returns b'' if already at EOF.
        """
        self._check_can_read()
        # Shortcut for the common case - the whole line is in the buffer.
        if size < 0:
            end = self._buffer.find(b"\n", self._buffer_offset) + 1
            if end > 0:
                line = self._buffer[self._buffer_offset : end]
                self._buffer_offset = end
                self._pos += len(line)
                return line
        return io.BufferedIOBase.readline(self, size)