def peek(self, n=<NUM_LIT:1>):
if n > len(self._readbuffer) - self._offset:<EOL><INDENT>chunk = self.read(n)<EOL>self._offset -= len(chunk)<EOL><DEDENT>return self._readbuffer[self._offset: self._offset + <NUM_LIT>]<EOL>
Returns buffered bytes without advancing the position.