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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 write_measurement(measurement, root_file=None, xml_path=None, output_path=None, output_suffix=None, write_workspaces=False, apply_xml_patches=True, silence=False):
 """ Write a measurement and RooWorkspaces for all contained channels into a ROOT file and write the XML files into a directory. Parameters measurement : HistFactory::Measurement An asrootpy'd ``HistFactory::Measurement`` object root_file : ROOT TFile or string, optional (default=None) A ROOT file or string file name. The measurement and workspaces will be written to this file. If ``root_file is None`` then a new file will be created with the same name as the measurement and with the prefix ``ws_``. xml_path : string, optional (default=None) A directory path to write the XML into. If None, a new directory with the same name as the measurement and with the prefix ``xml_`` will be created. output_path : string, optional (default=None) If ``root_file is None``, create the ROOT file under this path. If ``xml_path is None``, create the XML directory under this path. output_suffix : string, optional (default=None) If ``root_file is None`` then a new file is created with the same name as the measurement and with the prefix ``ws_``. ``output_suffix`` will append a suffix to this file name (before the .root extension). If ``xml_path is None``, then a new directory is created with the same name as the measurement and with the prefix ``xml_``. ``output_suffix`` will append a suffix to this directory name. write_workspaces : bool, optional (default=False) If True then also write a RooWorkspace for each channel and for all channels combined. apply_xml_patches : bool, optional (default=True) Apply fixes on the output of ``Measurement::PrintXML()`` to avoid known HistFactory bugs. Some of the patches assume that the ROOT file containing the histograms will exist one directory level up from the XML and that hist2workspace, or any tool that later reads the XML will run from that same directory containing the ROOT file. silence : bool, optional (default=False) If True then capture and silence all stdout/stderr output from HistFactory. """

    context = silence_sout_serr if silence else do_nothing

    output_name = measurement.name
    if output_suffix is not None:
        output_name += '_{0}'.format(output_suffix)
    output_name = output_name.replace(' ', '_')

    if xml_path is None:
        xml_path = 'xml_{0}'.format(output_name)
        if output_path is not None:
            xml_path = os.path.join(output_path, xml_path)

    if not os.path.exists(xml_path):
        mkdir_p(xml_path)

    if root_file is None:
        root_file = 'ws_{0}.root'.format(output_name)
        if output_path is not None:
            root_file = os.path.join(output_path, root_file)

    own_file = False
    if isinstance(root_file, string_types):
        root_file = root_open(root_file, 'recreate')
        own_file = True

    with preserve_current_directory():
        root_file.cd()

        log.info("writing histograms and measurement in {0} ...".format(
            root_file.GetName()))
        with context():
            measurement.writeToFile(root_file)
        # get modified measurement
        out_m = root_file.Get(measurement.name)
        log.info("writing XML in {0} ...".format(xml_path))
        with context():
            out_m.PrintXML(xml_path)

        if write_workspaces:
            log.info("writing combined model in {0} ...".format(
                root_file.GetName()))
            workspace = make_workspace(measurement, silence=silence)
            workspace.Write()
            for channel in measurement.channels:
                log.info("writing model for channel `{0}` in {1} ...".format(
                    channel.name, root_file.GetName()))
                workspace = make_workspace(
                    measurement, channel=channel, silence=silence)
                workspace.Write()

    if apply_xml_patches:
        # patch the output XML to avoid HistFactory bugs
        patch_xml(glob(os.path.join(xml_path, '*.xml')),
                  root_file=os.path.basename(root_file.GetName()))

    if own_file:
        root_file.Close()