How to use the template.parse_template function in template

def compile_views(folder):
    """
    Compiles all the views in the application specified by `folder`
    """

    path = os.path.join(folder, 'views')
    for file in listdir(path, '^[\w/\-]+(\.\w+)+$'):
        data = parse_template(file, path)
        filename = ('views/%s.py' % file).replace('/', '_').replace('\\', '_')
        filename = os.path.join(folder, 'compiled', filename)
        write_file(filename, data)
        save_pyc(filename)
        os.unlink(filename)

def compile_views(folder):
    """
    Compiles all the views in the application specified by `folder`
    """

    path = pjoin(folder, 'views')
    for file in listdir(path, '^[\w/\-]+(\.\w+)*$'):
        try:
            data = parse_template(file, path)
        except Exception, e:
            raise Exception("%s in %s" % (e, file))
        filename = ('views/%s.py' % file).replace('/', '_').replace('\\', '_')
        filename = pjoin(folder, 'compiled', filename)
        write_file(filename, data)
        save_pyc(filename)
        os.unlink(filename)

                           lambda: compile2(parse_template(response.view,
                                            os.path.join(folder, 'views'),
                                            context=environment),layer))
        else:

The view is the one specified in `response.view` or determined by the url
    or `view/generic.extension`
    It tries the pre-compiled views_controller_function.pyc before compiling it.
    """

    request = environment['request']
    response = environment['response']
    folder = request.folder
    path = os.path.join(folder, 'compiled')
    badv = 'invalid view (%s)' % response.view
    patterns = response.generic_patterns or []
    regex = re.compile('|'.join(fnmatch.translate(r) for r in patterns))
    short_action =  '%(controller)s/%(function)s.%(extension)s' % request
    allow_generic = patterns and regex.search(short_action)
    if not isinstance(response.view, str):
        ccode = parse_template(response.view, os.path.join(folder, 'views'),
                               context=environment)
        restricted(ccode, environment, 'file stream')
    elif os.path.exists(path):
        x = response.view.replace('/', '_')
        files = ['views_%s.pyc' % x]
        if allow_generic:
            files.append('views_generic.%s.pyc' % request.extension)
        # for backward compatibility
        if request.extension == 'html':
            files.append('views_%s.pyc' % x[:-5])
            if allow_generic:
                files.append('views_generic.pyc')
        # end backward compatibility code
        for f in files:
            filename = os.path.join(path,f)
            if os.path.exists(filename):

                           lambda: compile2(parse_template(view,
                                            pjoin(folder, 'views'),
                                            context=environment), layer))
        else:

filename = os.path.join(folder, 'views', response.view)
        if not os.path.exists(filename) and allow_generic:
            response.view = 'generic.' + request.extension
            filename = os.path.join(folder, 'views', response.view)
        if not os.path.exists(filename):
            raise HTTP(404,
                       rewrite.thread.routes.error_message % badv,
                       web2py_error=badv)
        layer = filename
        if is_gae:
            ccode = getcfs(layer, filename,
                           lambda: compile2(parse_template(response.view,
                                            os.path.join(folder, 'views'),
                                            context=environment),layer))
        else:
            ccode = parse_template(response.view,
                                   os.path.join(folder, 'views'),
                                   context=environment)
        restricted(ccode, environment, layer)

"""
    request = environment['request']
    response = environment['response']
    view = response.view
    folder = request.folder
    path = pjoin(folder, 'compiled')
    badv = 'invalid view (%s)' % view
    if response.generic_patterns:
        patterns = response.generic_patterns
        regex = re_compile('|'.join(map(fnmatch.translate, patterns)))
        short_action = '%(controller)s/%(function)s.%(extension)s' % request
        allow_generic = regex.search(short_action)
    else:
        allow_generic = False
    if not isinstance(view, str):
        ccode = parse_template(view, pjoin(folder, 'views'),
                               context=environment)
        restricted(ccode, environment, 'file stream')
    elif os.path.exists(path):
        x = view.replace('/', '_')
        files = ['views_%s.pyc' % x]
        if allow_generic:
            files.append('views_generic.%s.pyc' % request.extension)
        # for backward compatibility
        if request.extension == 'html':
            files.append('views_%s.pyc' % x[:-5])
            if allow_generic:
                files.append('views_generic.pyc')
        # end backward compatibility code
        for f in files:
            filename = pjoin(path, f)
            if os.path.exists(filename):

def compile_views(folder):
    """
    Compiles all the views in the application specified by `folder`
    """

    path = os.path.join(folder, 'views')
    for file in listdir(path, '^[\w/]+\.\w+$'):
        data = parse_template(file, path)
        filename = ('views/%s.py' % file).replace('/', '_').replace('\\', '_')
        filename = os.path.join(folder, 'compiled', filename)
        fp = open(filename, 'w')
        fp.write(data)
        fp.close()
        save_pyc(filename)
        os.unlink(filename)