How to use the template.Template function in template

problembase = os.path.splitext(os.path.basename(problem))[0]
    destdir = Template(options.destdir).safe_substitute(problem=problembase)
    destfile = Template(options.destfile).safe_substitute(problem=problembase)
    imgbasedir = Template(options.imgbasedir).safe_substitute(problem=problembase)

    if options.quiet:
        disableLogging()
    else:
        getLogger().setLevel(eval("logging." + options.loglevel.upper()))
        getLogger('status').setLevel(eval("logging." + options.loglevel.upper()))

    texfile = problem
    # Set up template if necessary
    templ = None
    if os.path.isdir(problem):
        templ = template.Template(problem, language=options.language, title=options.title)
        texfile = templ.get_file_name()

    origcwd = os.getcwd()

    # Setup parser and renderer etc
    tex = TeX(file=texfile)

    ProblemsetMacros.init(tex)

    tex.ownerDocument.config['general']['copy-theme-extras'] = options.css
    if not options.headers:
        tex.ownerDocument.userdata['noheaders'] = True
    tex.ownerDocument.config['files']['filename'] = destfile
    tex.ownerDocument.config['images']['filenames'] = 'img-$num(4)'
    tex.ownerDocument.config['images']['enabled'] = False
    tex.ownerDocument.config['images']['imager'] = 'none'

problembase = os.path.splitext(os.path.basename(problem))[0]
    destdir = Template(options.destdir).safe_substitute(problem=problembase)
    destfile = Template(options.destfile).safe_substitute(problem=problembase)
    imgbasedir = Template(options.imgbasedir).safe_substitute(problem=problembase)

    if options.quiet:
        disableLogging()
    else:
        getLogger().setLevel(eval("logging." + options.loglevel.upper()))
        getLogger('status').setLevel(eval("logging." + options.loglevel.upper()))

    texfile = problem
    # Set up template if necessary
    templ = None
    if os.path.isdir(problem):
        templ = template.Template(problem, language=options.language, title=options.title)
        texfile = templ.get_file_name()

    origcwd = os.getcwd()

    # Setup parser and renderer etc
    tex = TeX(file=texfile)

    ProblemsetMacros.init(tex)

    tex.ownerDocument.config['general']['copy-theme-extras'] = options.css
    if not options.headers:
        tex.ownerDocument.userdata['noheaders'] = True
    tex.ownerDocument.config['files']['filename'] = destfile
    tex.ownerDocument.config['images']['filenames'] = 'img-$num(4)'
    tex.ownerDocument.config['images']['enabled'] = False
    tex.ownerDocument.config['images']['imager'] = 'none'

else:
		# post_comment() does permissions checking itself,
		# and the caller has already done it too, so we don't
		# do it a *third* time; we just go straight.
		res = context.model.post_comment(comdata, context,
						 whois, whourl)
		if res:
			context.setvar(":comment:post", "good")
		else:
			context.setvar(":comment:post", "bad")
		comment_posted(context)

	# :comment:post now holds what happened, so we let the top
	# level template dispatch off it to figure out what to do.
	to = context.model.get_template("comment/posting.tmpl")
	resp.html(template.Template(to).render(context))
	context.unrel_time()
	return True

def loginerror(ctx, resp):
	ctx.unrel_time()
	to = ctx.model.get_template("login-error.tmpl", False)
	if not to:
		resp.error("Your login attempt was unsuccessful. Please try again. (We apologize for the terseness here, but our normal friendly login failure page is broken.)")
	else:
		resp.html(template.Template(to).render(ctx))

# reset the auto-expansion of nodes
            common.app_tree.auto_expand = True
            os.chdir(old_dir)
            return False

        if not is_filelike:
            infile.close()
        common.app_tree.select_item(common.app_tree.root)
        common.app_tree.root.widget.show_properties()
        common.property_panel.Reparent(self.frame2)
        # reset the auto-expansion of nodes
        common.app_tree.auto_expand = True
        common.app_tree.expand()
        if common.app_tree.app.is_template:
            print _("Loaded template")
            common.app_tree.app.template_data = template.Template(infilename)
            common.app_tree.app.filename = None

        end = time.clock()
        print _('Loading time: %.5f') % (end-start)

        common.app_tree.app.saved = True
        
        if hasattr(self, 'file_history') and infilename is not None and \
               add_to_history and (not common.app_tree.app.is_template):
            self.file_history.AddFileToHistory(misc.wxstr(infilename))

        # ALB 2004-10-15
        if config.preferences.autosave and self.autosave_timer is not None:
            self.autosave_timer.Start()

        self.user_message(_("Loaded %s (%.2f seconds)") % \

def make_first_time_setup_gateway():
    # TODO: Make sure we're in secure mode (HTTPS)
    return Template('first_time_setup')

def process_dir(root_dir, subdir, template):
    curr_dir = os.path.join(root_dir, subdir)

    # Look for template in current dir
    template_file = os.path.join(curr_dir, config.TEMPLATE_FILE)
    if os.path.exists(template_file):
        template = Template(template_file)

    # look for images in current dir to process
    paths = config.Paths(os.path.join(args['output_dir'], subdir))   
    exts = ('*.png', '*.jpg')
    omr_files = sorted(
        [f for ext in exts for f in glob(os.path.join(curr_dir, ext))])

    # Exclude marker image if exists
    if(template and template.marker_path):
        omr_files = [f for f in omr_files if f != template.marker_path]

    subfolders = sorted([file for file in os.listdir(
        curr_dir) if os.path.isdir(os.path.join(curr_dir, file))])
    if omr_files:
        args_local = args.copy()
        if("OverrideFlags" in template.options):

def errortitle(context):
	"""Generate the title for an error from a template in _errors/_,
	if the template exists; otherwise uses a default. Only usable
	during generation of an error page."""
	if ":error:error" not in context:
		return ''
	(etype, to) = errorTemplate(context, "title")
	if to:
		return template.Template(to).render(context)
	elif etype in title_map:
		return title_map[etype] % context[":error:code"]
	else:
		return default_title % context[":error:code"]
htmlrends.register("error::title", errortitle)