def compare(self):  
<EOL>running_config = self._download_running_config()<EOL>running_config_lines = running_config.splitlines()<EOL>last_committed_config = self._last_working_config<EOL>last_committed_config_lines = last_committed_config.splitlines()<EOL>difference = difflib.unified_diff(running_config_lines, last_committed_config_lines, n=<NUM_LIT:0>)<EOL>return '<STR_LIT:\n>'.join(difference)<EOL>
Computes the difference between the candidate config and the running config.