(notify) C:>jupyter lab
[W 2022-04-29 15:14:24.957 LabApp] 'base_url' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2022-04-29 15:14:24.972 LabApp] 'browser' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2022-04-29 15:14:24.972 LabApp] 'notebook_dir' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2022-04-29 15:14:24.979 ServerApp] notebook_dir is deprecated, use root_dir
[I 2022-04-29 15:14:24.979 ServerApp] jupyterlab | extension was successfully linked.
[I 2022-04-29 15:14:24.979 ServerApp] nbclassic | extension was successfully linked.
[I 2022-04-29 15:14:25.480 ServerApp] notebook_shim | extension was successfully linked.
Traceback (most recent call last):
File "C:\Users\tef0\Anaconda3\envs\notify\Scripts\jupyter-lab-script.py", line 9, in
sys.exit(main())
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\jupyter_server\extension\application.py", line 584, in launch_instance
serverapp = cls.initialize_server(argv=args)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\jupyter_server\extension\application.py", line 554, in initialize_server
serverapp.initialize(
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\traitlets\config\application.py", line 88, in inner
return method(app, *args, **kwargs)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\jupyter_server\serverapp.py", line 2414, in initialize
self.init_webapp()
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\jupyter_server\serverapp.py", line 1904, in init_webapp
self.web_app = ServerWebApplication(
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\jupyter_server\serverapp.py", line 251, in init
super().init(handlers, **settings)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\tornado\web.py", line 2078, in init
self.wildcard_router = _ApplicationRouter(self, handlers)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\tornado\web.py", line 1926, in init
super().init(rules)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\tornado\routing.py", line 414, in init
super().init(rules)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\tornado\routing.py", line 332, in init
self.add_rules(rules)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\tornado\routing.py", line 344, in add_rules
rule = Rule(PathMatches(rule[0]), *rule[1:])
File "C:\Users\tef0\Anaconda3\envs\notify\lib\site-packages\tornado\routing.py", line 559, in init
self.regex = re.compile(path_pattern)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\re.py", line 252, in compile
return _compile(pattern, flags)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\re.py", line 304, in _compile
p = sre_compile.compile(pattern, flags)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\sre_compile.py", line 764, in compile
p = sre_parse.parse(p, flags)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\sre_parse.py", line 948, in parse
p = _parse_sub(source, state, flags & SRE_FLAG_VERBOSE, 0)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\sre_parse.py", line 443, in _parse_sub
itemsappend(_parse(source, state, verbose, nested + 1,
File "C:\Users\tef0\Anaconda3\envs\notify\lib\sre_parse.py", line 525, in _parse
code = _escape(source, this, state)
File "C:\Users\tef0\Anaconda3\envs\notify\lib\sre_parse.py", line 426, in _escape
raise source.error("bad escape %s" % escape, len(escape))
re.error: bad escape \P at position 3

Uh oh!

sre_parse.py #92057

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