<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def parse(self, uri, defaults=None):
 """Parse the URI. uri is the uri to parse. defaults is a scheme-dependent list of values to use if there is no value for that part in the supplied URI. The return value is a tuple of scheme-dependent length. """

        return tuple([self.scheme_of(uri)] + list(self.parser_for(uri)(defaults).parse(uri)))