<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def merge(self, indict):
 """ A recursive update - useful for merging config files. ConfigObj({'section1': {'option1': 'False', 'subsection': {'more_options': 'False'}}}) """

        for key, val in list(indict.items()):
            if (key in self and isinstance(self[key], dict) and
                                isinstance(val, dict)):
                self[key].merge(val)
            else:
                self[key] = val