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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 build(self):
 """Only build and create Slackware package """

        pkg_security([self.name])
        self.error_uns()
        if self.FAULT:
            print("")
            self.msg.template(78)
            print("| Package {0} {1} {2} {3}".format(self.prgnam, self.red,
                                                     self.FAULT, self.endc))
            self.msg.template(78)
        else:
            sources = []
            if not os.path.exists(self.meta.build_path):
                os.makedirs(self.meta.build_path)
            if not os.path.exists(self._SOURCES):
                os.makedirs(self._SOURCES)
            os.chdir(self.meta.build_path)
            Download(self.meta.build_path, self.sbo_dwn.split(),
                     repo="sbo").start()
            Download(self._SOURCES, self.source_dwn, repo="sbo").start()
            script = self.sbo_dwn.split("/")[-1]
            for src in self.source_dwn:
                sources.append(src.split("/")[-1])
            BuildPackage(script, sources, self.meta.build_path,
                         auto=False).build()
            slack_package(self.prgnam)