无法在dash应用程序中加载静态css文件

Question

我已经构建了一个单页的dash应用程序，当作为单个文件运行时，它可以按预期运行，但是当我试图将它作为一个完整的应用程序运行时，CSS无法正确加载。在

下面是我的文件夹结构

当我通过manage.py加载整个应用程序时，我得到的错误是

Internal Server Error: /assets/internal.css
Traceback (most recent call last):
  File "C:\Users\Tushar\Documents\serato_video_analyser\video_analyser\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\Users\Tushar\Documents\serato_video_analyser\video_analyser\lib\site-packages\django\core\handlers\base.py", line 126, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\Tushar\Documents\serato_video_analyser\video_analyser\lib\site-packages\django\core\handlers\base.py", line 124, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\Tushar\Documents\serato_video_analyser\video_analyser\my_project\analyser_tool\views.py", line 32, in dash_index
    return HttpResponse(dispatcher(request))
  File "C:\Users\Tushar\Documents\serato_video_analyser\video_analyser\my_project\analyser_tool\views.py", line 27, in dispatcher
    return response.get_data()
  File "C:\Users\Tushar\Documents\serato_video_analyser\video_analyser\lib\site-packages\werkzeug\wrappers.py", line 986, in get_data
    self._ensure_sequence()
  File "C:\Users\Tushar\Documents\serato_video_analyser\video_analyser\lib\site-packages\werkzeug\wrappers.py", line 1035, in _ensure_sequence
    raise RuntimeError('Attempted implicit sequence conversion '
RuntimeError: Attempted implicit sequence conversion but the response object is in direct passthrough mode.

这是我唯一的第二个dash应用程序，我正在工作，不幸的是没有太多的经验。如果有人能帮我解决这个问题，我真的很高兴。我已经挣扎了好几天了。在

提前多谢了！！在

Answer 1

通过持续的研究，我能够通过在我的服务器.py在

css_directory = os.getcwd()
stylesheets = ['stylesheet.css']
static_css_route = '/static/'


@app.server.route('{}<stylesheet>'.format(static_css_route))
def serve_stylesheet(stylesheet):
    if stylesheet not in stylesheets:
        raise Exception(
            '"{}" is excluded from the allowed static files'.format(
                stylesheet
            )
        )
    return flask.send_from_directory(css_directory, stylesheet)


for stylesheet in stylesheets:
    app.css.append_css({"external_url": "/static/{}".format(stylesheet)})

这个答案是以前回答过的，是从

https://community.plot.ly/t/serve-locally-option-with-additional-scripts-and-style-sheets/6974/6