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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 load_file(self, file_obj, verbose):
 """ The type of open file objects such as sys.stdout; alias of the built-in file. @TODO: when is this used? """

        if verbose: printDebug("----------")
        if verbose: printDebug("Reading: <%s> ...'" % file_obj.name)

        if type(file_obj) == file:
            self.rdfgraph = self.rdfgraph + file_obj
            self.sources_valid += [file_obj.NAME]
        else:
            self.loading_failed(self.rdf_format_opts)
            self.sources_invalid += [file_obj.NAME]