How to use the youtube-dl.youtube_dl.utils.encodeFilename function in youtube_dl

def ensure_dir_exists(path):
            try:
                dn = os.path.dirname(path)
                if dn and not os.path.exists(dn):
                    os.makedirs(dn)
                return True
            except (OSError, IOError) as err:
                self.report_error('unable to create directory ' + error_to_compat_str(err))
                return False

        if not ensure_dir_exists(sanitize_path(encodeFilename(filename))):
            return

        if self.params.get('writedescription', False):
            descfn = replace_extension(filename, 'description', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(descfn)):
                self.to_screen('[info] Video description is already present')
            elif info_dict.get('description') is None:
                self.report_warning('There\'s no description to write.')
            else:
                try:
                    self.to_screen('[info] Writing video description to: ' + descfn)
                    with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
                        descfile.write(info_dict['description'])
                except (OSError, IOError):
                    self.report_error('Cannot write description file ' + descfn)
                    return

        if self.params.get('writeannotations', False):
            annofn = replace_extension(filename, 'annotations.xml', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(annofn)):
                self.to_screen('[info] Video annotations are already present')

try:
                    self.to_screen('[info] Writing video description to: ' + descfn)
                    with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
                        descfile.write(info_dict['description'])
                except (OSError, IOError):
                    self.report_error('Cannot write description file ' + descfn)
                    return

        if self.params.get('writeannotations', False):
            annofn = replace_extension(filename, 'annotations.xml', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(annofn)):
                self.to_screen('[info] Video annotations are already present')
            else:
                try:
                    self.to_screen('[info] Writing video annotations to: ' + annofn)
                    with io.open(encodeFilename(annofn), 'w', encoding='utf-8') as annofile:
                        annofile.write(info_dict['annotations'])
                except (KeyError, TypeError):
                    self.report_warning('There are no annotations to write.')
                except (OSError, IOError):
                    self.report_error('Cannot write annotations file: ' + annofn)
                    return

        subtitles_are_requested = any([self.params.get('writesubtitles', False),
                                       self.params.get('writeautomaticsub')])

        if subtitles_are_requested and info_dict.get('requested_subtitles'):
            # subtitles download errors are already managed as troubles in relevant IE
            # that way it will silently go on when used with unsupporting IE
            subtitles = info_dict['requested_subtitles']
            ie = self.get_info_extractor(info_dict['extractor_key'])
            for sub_lang, sub_info in subtitles.items():

else:
                    self.to_screen('[info] Writing video subtitles to: ' + sub_filename)
                    if sub_info.get('data') is not None:
                        try:
                            # Use newline='' to prevent conversion of newline characters
                            # See https://github.com/rg3/youtube-dl/issues/10268
                            with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8', newline='') as subfile:
                                subfile.write(sub_info['data'])
                        except (OSError, IOError):
                            self.report_error('Cannot write subtitles file ' + sub_filename)
                            return
                    else:
                        try:
                            sub_data = ie._request_webpage(
                                sub_info['url'], info_dict['id'], note=False).read()
                            with io.open(encodeFilename(sub_filename), 'wb') as subfile:
                                subfile.write(sub_data)
                        except (ExtractorError, IOError, OSError, ValueError) as err:
                            self.report_warning('Unable to download subtitle for "%s": %s' %
                                                (sub_lang, error_to_compat_str(err)))
                            continue

        if self.params.get('writeinfojson', False):
            infofn = replace_extension(filename, 'info.json', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(infofn)):
                self.to_screen('[info] Video description metadata is already present')
            else:
                self.to_screen('[info] Writing video description metadata as JSON to: ' + infofn)
                try:
                    write_json_file(self.filter_requested_info(info_dict), infofn)
                except (OSError, IOError):
                    self.report_error('Cannot write metadata to JSON file ' + infofn)

elif self.params.get('write_all_thumbnails', False):
            thumbnails = info_dict.get('thumbnails')
        else:
            return

        if not thumbnails:
            # No thumbnails present, so return immediately
            return

        for t in thumbnails:
            thumb_ext = determine_ext(t['url'], 'jpg')
            suffix = '_%s' % t['id'] if len(thumbnails) > 1 else ''
            thumb_display_id = '%s ' % t['id'] if len(thumbnails) > 1 else ''
            t['filename'] = thumb_filename = os.path.splitext(filename)[0] + suffix + '.' + thumb_ext

            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(thumb_filename)):
                self.to_screen('[%s] %s: Thumbnail %sis already present' %
                               (info_dict['extractor'], info_dict['id'], thumb_display_id))
            else:
                self.to_screen('[%s] %s: Downloading thumbnail %s...' %
                               (info_dict['extractor'], info_dict['id'], thumb_display_id))
                try:
                    uf = self.urlopen(t['url'])
                    with open(encodeFilename(thumb_filename), 'wb') as thumbf:
                        shutil.copyfileobj(uf, thumbf)
                    self.to_screen('[%s] %s: Writing thumbnail %sto: %s' %
                                   (info_dict['extractor'], info_dict['id'], thumb_display_id, thumb_filename))
                except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
                    self.report_warning('Unable to download thumbnail "%s": %s' %
                                        (t['url'], error_to_compat_str(err)))

# '%%' intact for template dict substitution step. Working around
            # with boundary-alike separator hack.
            sep = ''.join([random.choice(ascii_letters) for _ in range(32)])
            outtmpl = outtmpl.replace('%%', '%{0}%'.format(sep)).replace('$$', '${0}$'.format(sep))

            # outtmpl should be expand_path'ed before template dict substitution
            # because meta fields may contain env variables we don't want to
            # be expanded. For example, for outtmpl "%(title)s.%(ext)s" and
            # title "Hello $PATH", we don't want `$PATH` to be expanded.
            filename = expand_path(outtmpl).replace(sep, '') % template_dict

            # Temporary fix for #4787
            # 'Treat' all problem characters by passing filename through preferredencoding
            # to workaround encoding issues with subprocess on python2 @ Windows
            if sys.version_info < (3, 0) and sys.platform == 'win32':
                filename = encodeFilename(filename, True).decode(preferredencoding())
            return sanitize_path(filename)
        except ValueError as err:
            self.report_error('Error in output template: ' + str(err) + ' (encoding: ' + repr(preferredencoding()) + ')')
            return None

if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(descfn)):
                self.to_screen('[info] Video description is already present')
            elif info_dict.get('description') is None:
                self.report_warning('There\'s no description to write.')
            else:
                try:
                    self.to_screen('[info] Writing video description to: ' + descfn)
                    with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
                        descfile.write(info_dict['description'])
                except (OSError, IOError):
                    self.report_error('Cannot write description file ' + descfn)
                    return

        if self.params.get('writeannotations', False):
            annofn = replace_extension(filename, 'annotations.xml', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(annofn)):
                self.to_screen('[info] Video annotations are already present')
            else:
                try:
                    self.to_screen('[info] Writing video annotations to: ' + annofn)
                    with io.open(encodeFilename(annofn), 'w', encoding='utf-8') as annofile:
                        annofile.write(info_dict['annotations'])
                except (KeyError, TypeError):
                    self.report_warning('There are no annotations to write.')
                except (OSError, IOError):
                    self.report_error('Cannot write annotations file: ' + annofn)
                    return

        subtitles_are_requested = any([self.params.get('writesubtitles', False),
                                       self.params.get('writeautomaticsub')])

        if subtitles_are_requested and info_dict.get('requested_subtitles'):

self.report_error('unable to create directory ' + error_to_compat_str(err))
                return False

        if not ensure_dir_exists(sanitize_path(encodeFilename(filename))):
            return

        if self.params.get('writedescription', False):
            descfn = replace_extension(filename, 'description', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(descfn)):
                self.to_screen('[info] Video description is already present')
            elif info_dict.get('description') is None:
                self.report_warning('There\'s no description to write.')
            else:
                try:
                    self.to_screen('[info] Writing video description to: ' + descfn)
                    with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
                        descfile.write(info_dict['description'])
                except (OSError, IOError):
                    self.report_error('Cannot write description file ' + descfn)
                    return

        if self.params.get('writeannotations', False):
            annofn = replace_extension(filename, 'annotations.xml', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(annofn)):
                self.to_screen('[info] Video annotations are already present')
            else:
                try:
                    self.to_screen('[info] Writing video annotations to: ' + annofn)
                    with io.open(encodeFilename(annofn), 'w', encoding='utf-8') as annofile:
                        annofile.write(info_dict['annotations'])
                except (KeyError, TypeError):
                    self.report_warning('There are no annotations to write.')

return

        if filename is None:
            return

        def ensure_dir_exists(path):
            try:
                dn = os.path.dirname(path)
                if dn and not os.path.exists(dn):
                    os.makedirs(dn)
                return True
            except (OSError, IOError) as err:
                self.report_error('unable to create directory ' + error_to_compat_str(err))
                return False

        if not ensure_dir_exists(sanitize_path(encodeFilename(filename))):
            return

        if self.params.get('writedescription', False):
            descfn = replace_extension(filename, 'description', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(descfn)):
                self.to_screen('[info] Video description is already present')
            elif info_dict.get('description') is None:
                self.report_warning('There\'s no description to write.')
            else:
                try:
                    self.to_screen('[info] Writing video description to: ' + descfn)
                    with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
                        descfile.write(info_dict['description'])
                except (OSError, IOError):
                    self.report_error('Cannot write description file ' + descfn)
                    return

self.report_error('Cannot write subtitles file ' + sub_filename)
                            return
                    else:
                        try:
                            sub_data = ie._request_webpage(
                                sub_info['url'], info_dict['id'], note=False).read()
                            with io.open(encodeFilename(sub_filename), 'wb') as subfile:
                                subfile.write(sub_data)
                        except (ExtractorError, IOError, OSError, ValueError) as err:
                            self.report_warning('Unable to download subtitle for "%s": %s' %
                                                (sub_lang, error_to_compat_str(err)))
                            continue

        if self.params.get('writeinfojson', False):
            infofn = replace_extension(filename, 'info.json', info_dict.get('ext'))
            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(infofn)):
                self.to_screen('[info] Video description metadata is already present')
            else:
                self.to_screen('[info] Writing video description metadata as JSON to: ' + infofn)
                try:
                    write_json_file(self.filter_requested_info(info_dict), infofn)
                except (OSError, IOError):
                    self.report_error('Cannot write metadata to JSON file ' + infofn)
                    return

        self._write_thumbnails(info_dict, filename)

        if not self.params.get('skip_download', False):
            try:
                def dl(name, info):
                    fd = get_suitable_downloader(info, self.params)(self, self.params)
                    for ph in self._progress_hooks: