如何修复jupyter notebook上由于'tornado.web‘没有’异步‘属性而导致的"500 :内部服务器错误“？
如何修复jupyter notebook上由于'tornado.web‘没有’异步‘属性而导致的"500 :内部服务器错误“？
提问于 2019-03-06 07:26:47
Jupiter notebook没有打开notebook，而是显示"500 : Internal Server Error“。我所做的就是激活一个我需要的环境并启动Jupyter。请在终端上找到我所做的工作和错误消息：
$ conda activate py3_parcels
$ jupyter notebook [I 18:20:39.663 NotebookApp] Loading IPython parallel extension [I 18:20:39.665 NotebookApp] Serving notebooks from local directory: /Users/davidlindo-atichati/run/GOM_MED [I 18:20:39.665 NotebookApp] The Jupyter Notebook is running at: [I 18:20:39.665 NotebookApp] http://localhost:8888/?token=36466fc830862b794856668cd6ded86fe0a664247233764a [I 18:20:39.665 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation). [C 18:20:39.677 NotebookApp]
Copy/paste this URL into your browser when you connect for the first time,
to login with a token:
http://localhost:8888/?token=36466fc830862b794856668cd6ded86fe0a664247233764a [I 18:20:40.211 NotebookApp] Accepting one-time-token-authenticated connection from ::1笔记本将在我的Safari浏览器上打开。但是，当我尝试打开现有的笔记本或创建新的笔记本时，我在浏览器中收到"500 : Internal Server Error“，并在终端上收到以下消息：
[E 18:22:16.169 NotebookApp] Uncaught exception GET /notebooks/backtracking-sample-1.ipynb (::1)
HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/notebooks/backtracking-sample-1.ipynb', version='HTTP/1.1', remote_ip='::1')
Traceback (most recent call last):
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/tornado/web.py", line 1697, in _execute
result = method(*self.path_args, **self.path_kwargs)
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/tornado/web.py", line 3174, in wrapper
return method(self, *args, **kwargs)
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/notebook/notebook/handlers.py", line 59, in get
get_custom_frontend_exporters=get_custom_frontend_exporters
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/notebook/base/handlers.py", line 467, in render_template
return template.render(**ns)
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/jinja2/asyncsupport.py", line 76, in render
return original_render(self, *args, **kwargs)
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/jinja2/environment.py", line 1008, in render
return self.environment.handle_exception(exc_info, True)
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/jinja2/environment.py", line 780, in handle_exception
reraise(exc_type, exc_value, tb)
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/jinja2/_compat.py", line 37, in reraise
raise value.with_traceback(tb)
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/notebook/templates/notebook.html", line 1, in top-level template code
{% extends "page.html" %}
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/notebook/templates/page.html", line 154, in top-level template code
{% block header %}
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/notebook/templates/notebook.html", line 120, in block "header"
{% for exporter in get_custom_frontend_exporters() %}
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/notebook/notebook/handlers.py", line 19, in get_custom_frontend_exporters
from nbconvert.exporters.base import get_export_names, get_exporter
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/nbconvert/__init__.py", line 7, in <module>
from . import postprocessors
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/nbconvert/postprocessors/__init__.py", line 5, in <module>
from .serve import ServePostProcessor
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/nbconvert/postprocessors/serve.py", line 19, in <module>
class ProxyHandler(web.RequestHandler):
File "/Users/davidlindo-atichati/miniconda3/envs/py3_parcels/lib/python3.7/site-packages/nbconvert/postprocessors/serve.py", line 21, in ProxyHandler
@web.asynchronous
AttributeError: module 'tornado.web' has no attribute 'asynchronous' [E 18:22:16.178 NotebookApp] {
"Host": "localhost:8888",
"Cookie": "username-localhost-8888=\"2|1:0|10:1551828040|23:username-localhost-8888|44:OGQ4ZTgzZDRjZjFiNDMzZDk0ZTI2NmJkMDc3OTEzMDk=|e4504cac3111242d53ab46ce3b8fa72750876a90bef7bc980a2ebb3c6f77caec\"; username-localhost-8889=\"2|1:0|10:1551821266|23:username-localhost-8889|44:ZjgyOTBhNTE3Zjg0NDJlOGIyNTA5NDRiNTBjMzQ0YTk=|43b122243108c4f7dbf37e636660b8d0656f5173d2b363a6bb496681de6d4e5f\";
_xsrf=2|0a22b984|8687c792155e13f5d476952db2d9f2f7|1551360338",
"Connection": "keep-alive",
"Upgrade-Insecure-Requests": "1",
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15",
"Referer": "http://localhost:8888/tree",
"Accept-Language": "en-us",
"Accept-Encoding": "gzip, deflate"
} [E 18:22:16.178 NotebookApp] 500 GET /notebooks/backtracking-sample-1.ipynb (::1) 121.50ms referer=http://localhost:8888/tree回答 5
Stack Overflow用户
发布于 2019-03-16 05:13:40
Stack Overflow用户
发布于 2019-03-08 09:04:01
@tevemadar可能在你的案例中有正确的答案。龙卷风6+正在引起与jupyter的冲突。如果您编辑environment.yml以指定
dependencies:
-tornado<6它为我解决了这个问题。
Stack Overflow用户
发布于 2020-10-22 20:32:46
具体来说，您需要修改文件nbconvert/exporters/templateexporter.py的_get_conf函数，如下所示：
def _get_conf(self):
conf = {} # the configuration once all conf files are merged
for path in map(Path, self.template_paths):
try:
conf_path = path / 'conf.json'
if conf_path.exists():
with conf_path.open() as f:
conf = recursive_update(conf, json.load(f))
except:
## not important
OK=1
return conf这是一个黑客攻击，希望未来对nbconvert的更新能提供永久的修复。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/55013206
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