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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 _setup_dmtf_schema(self):
 """ Install the DMTF CIM schema from the DMTF web site if it is not already installed. This includes downloading the DMTF CIM schema zip file from the DMTF web site and expanding that file into a subdirectory defined by `schema_mof_dir`. Once the schema zip file is downloaded into `schema_root_dir`, it is not re-downloaded if this function is recalled since DMTF CIM Schema releases are never modified; new update versions are released for minor changes. If the `schema_zip_file` is in the `schema_root_dir` directory, but no 'schema_mof_dir' subdirectory exists, the schema is unzipped. This allows the DMTF CIM schema zip file to be downloaded once and reused and the user to chose if they want to retain the extracted MOF files or remove them with :meth:`~pywbem_mock.DMTFCIMSchema.clean` when not being used. If the schema is to be committed a source repository such as git it is logical to commit only the DMTF CIM schema zip file. Creation of the `schema_mof_dir` subdirectory will be created when the :class:`pywbem_mock.DMTFCIMSchema` object is created. Raises: ValueError: If the schema cannot be retrieved from the DMTF web site. TypeError: If the `schema_version` is not a valid tuple with 3 integer components """


        def print_verbose(msg):
            """
            Inner method prints msg if self.verbose is `True`.
            """
            if self.verbose:
                print(msg)

        if not os.path.isdir(self.schema_root_dir):
            print_verbose(
                _format("Creating directory for CIM Schema archive: {0}",
                        self.schema_root_dir))
            os.mkdir(self.schema_root_dir)

        if not os.path.isfile(self.schema_zip_file):
            print_verbose(
                _format("Downloading CIM Schema archive from: {0}",
                        self.schema_zip_url))

            try:
                ufo = urlopen(self.schema_zip_url)
            except IOError as ie:
                os.rmdir(self.schema_root_dir)
                raise ValueError(
                    _format("DMTF Schema archive not found at url {0}: {1}",
                            self.schema_zip_url, ie))

            with open(self.schema_zip_file, 'wb') as fp:
                for data in ufo:
                    fp.write(data)

        if not os.path.isdir(self.schema_mof_dir):
            print_verbose(
                _format("Creating directory for CIM Schema MOF files: {0}",
                        self.schema_mof_dir))
            os.mkdir(self.schema_mof_dir)
        if not os.path.isfile(self._schema_mof_file):
            print_verbose(
                _format("Unpacking CIM Schema archive: {0}",
                        self.schema_zip_file))

            zfp = None
            try:
                zfp = ZipFile(self.schema_zip_file, 'r')
                nlist = zfp.namelist()
                for file_ in nlist:
                    dfile = os.path.join(self.schema_mof_dir, file_)
                    if dfile[-1] == '/':
                        if not os.path.exists(dfile):
                            os.mkdir(dfile)
                    else:
                        with open(dfile, 'w+b') as dfp:
                            dfp.write(zfp.read(file_))
            finally:
                if zfp:
                    zfp.close()