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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 run(self):
 """Run and check if new in ChangeLog.txt """

        if (self.repo in self.meta.default_repositories and
                self.repo in self.meta.repositories):
            try:
                self.check = self.all_repos[self.repo]()
            except OSError:
                usage(self.repo)
                raise SystemExit()
        elif self.repo in self.meta.repositories:
            self.check = self._init.custom(self.repo)
        else:
            usage(self.repo)
            raise SystemExit()
        self.status_bar()
        self.status()
        self.print_status(self.repo)
        self.summary()