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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 dump(self, full=True, redact=False):
 """Dump the Configuration object to a YAML file. The order of the keys is determined from the default configuration file. All keys not in the default configuration will be appended to the end of the file. :param filename: The file to dump the configuration to, or None if the YAML string should be returned instead :type filename: unicode :param full: Dump settings that don't differ from the defaults as well :param redact: Remove sensitive information (views with the `redact` flag set) from the output """

        if full:
            out_dict = self.flatten(redact=redact)
        else:
            # Exclude defaults when flattening.
            sources = [s for s in self.sources if not s.default]
            temp_root = RootView(sources)
            temp_root.redactions = self.redactions
            out_dict = temp_root.flatten(redact=redact)

        yaml_out = yaml.dump(out_dict, Dumper=Dumper,
                             default_flow_style=None, indent=4,
                             width=1000)

        # Restore comments to the YAML text.
        default_source = None
        for source in self.sources:
            if source.default:
                default_source = source
                break
        if default_source and default_source.filename:
            with open(default_source.filename, 'rb') as fp:
                default_data = fp.read()
            yaml_out = restore_yaml_comments(yaml_out,
                                             default_data.decode('utf-8'))

        return yaml_out