bottle.py 文件源码

def template(*args, **kwargs):
    '''
    Get a rendered template as a string iterator.
    You can use a name, a filename or a template string as first parameter.
    Template rendering arguments can be passed as dictionaries
    or directly (as keyword arguments).
    '''
    tpl = args[0] if args else None
    template_adapter = kwargs.pop('template_adapter', SimpleTemplate)
    if tpl not in TEMPLATES or DEBUG:
        settings = kwargs.pop('template_settings', {})
        lookup = kwargs.pop('template_lookup', TEMPLATE_PATH)
        if isinstance(tpl, template_adapter):
            TEMPLATES[tpl] = tpl
            if settings: TEMPLATES[tpl].prepare(**settings)
        elif "\n" in tpl or "{" in tpl or "%" in tpl or '$' in tpl:
            TEMPLATES[tpl] = template_adapter(source=tpl, lookup=lookup, **settings)
        else:
            TEMPLATES[tpl] = template_adapter(name=tpl, lookup=lookup, **settings)
    if not TEMPLATES[tpl]:
        abort(500, 'Template (%s) not found' % tpl)
    for dictarg in args[1:]: kwargs.update(dictarg)
    return TEMPLATES[tpl].render(kwargs)