error message
(base) grantmeadowsjr#Grants-Mac ~ % jupyter lab
[I 2021-11-27 10:33:53.031 ServerApp] jupyterlab | extension was successfully linked.
[I 2021-11-27 10:33:53.429 ServerApp] nbclassic | extension was successfully linked.
Traceback (most recent call last):
File "/opt/anaconda3/bin/jupyter-lab", line 10, in <module>
sys.exit(main())
File "/opt/anaconda3/lib/python3.9/site-packages/jupyter_server/extension/application.py", line 510, in launch_instance
serverapp = cls.initialize_server(argv=args)
File "/opt/anaconda3/lib/python3.9/site-packages/jupyter_server/extension/application.py", line 479, in initialize_server
serverapp.initialize(
File "/opt/anaconda3/lib/python3.9/site-packages/traitlets/config/application.py", line 88, in inner
return method(app, *args, **kwargs)
File "/opt/anaconda3/lib/python3.9/site-packages/jupyter_server/serverapp.py", line 1831, in initialize
self.init_httpserver()
File "/opt/anaconda3/lib/python3.9/site-packages/jupyter_server/serverapp.py", line 1752, in init_httpserver
self.http_server.listen(port, self.ip)
File "/opt/anaconda3/lib/python3.9/site-packages/tornado/tcpserver.py", line 151, in listen
sockets = bind_sockets(port, address=address)
File "/opt/anaconda3/lib/python3.9/site-packages/tornado/netutil.py", line 161, in bind_sockets
sock.bind(sockaddr)
OSError: [Errno 49] Can't assign requested address
This is the error I receive when I open jupyter notebook from anaconda. I am not very familiar with using the mac terminal, I had to download anaconda for my class.
Trying to setup a Jupyter notebook server on personal machine with public IP and getting this error:
jupyter notebook --ip 69.84.109.70 --no-browser --port 8888
Traceback (most recent call last):
File "/usr/local/bin/jupyter-notebook", line 8, in <module>
sys.exit(main())
File "/usr/local/lib/python3.7/dist-packages/jupyter_core/application.py", line 270, in launch_instance
return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
File "/usr/local/lib/python3.7/dist-packages/traitlets/config/application.py", line 663, in launch_instance
app.initialize(argv)
File "</usr/local/lib/python3.7/dist-packages/decorator.py:decorator-gen-7>", line 2, in initialize
File "/usr/local/lib/python3.7/dist-packages/traitlets/config/application.py", line 87, in catch_config_error
return method(app, *args, **kwargs)
File "/usr/local/lib/python3.7/dist-packages/notebook/notebookapp.py", line 1769, in initialize
self.init_webapp()
File "/usr/local/lib/python3.7/dist-packages/notebook/notebookapp.py", line 1490, in init_webapp
self.http_server.listen(port, self.ip)
File "/usr/local/lib/python3.7/dist-packages/tornado/tcpserver.py", line 151, in listen
sockets = bind_sockets(port, address=address)
File "/usr/local/lib/python3.7/dist-packages/tornado/netutil.py", line 174, in bind_sockets
sock.bind(sockaddr)
OSError: [Errno 99] Cannot assign requested address
When I run it with my internal IP address it works fine.
Config file:
cat /home/user/.jupyter/jupyter_notebook_config.
c.NotebookApp.allow_origin = '*' #allow all origins
c.NotebookApp.ip = '0.0.0.0' # listen on all IPs
Use the following command to run your jupyter notebook
jupyter notebook --ip=0.0.0.0 --port=8080
I have previously used Jupyter Notebook (python 2 and 3) on my mac. After not using it for a while, there seems to be a problem I am unable to fix. When starting the notebook from terminal using the command Jupyter notebook, and then select a notebook I want to work with, I get the error:
"A connection to the notebook server could not be established. The notebook will continue trying to reconnect. Check your network connection or notebook server configuration."
I am positive this has nothing to do with my internet connection (I have tried 2 machines connected to different networks).
I have read that the browser could be the problem, therefore I have installed Chrome and Firefox. However, I get this error when I am using Safari, Chrome, and Firefox.
Then I read about it being a proxy issue. I have tried to add the server address of the notebook to the No proxy fields of the advanced network preferences of my mac, and of the advanced setting on Firefox.
The only thing I can think of is that I am entering the wrong server address?
I do not know much about setting and errors in general, hopefully someone can provide me with some alternative options to get Jupyter working again.
Terminal output:
ValueError: signal only works in main thread
ERROR:tornado.application:Exception in callback <functools.partial object at 0x111e2b208>
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 759, in _run_callback
ret = callback()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/zmq/eventloop/zmqstream.py", line 536, in <lambda>
self.io_loop.add_callback(lambda : self._handle_events(self.socket, 0))
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/zmq/eventloop/zmqstream.py", line 450, in _handle_events
self._handle_recv()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/zmq/eventloop/zmqstream.py", line 480, in _handle_recv
self._run_callback(callback, msg)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelbase.py", line 283, in dispatcher
return self.dispatch_shell(stream, msg)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelbase.py", line 233, in dispatch_shell
self.pre_handler_hook()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelbase.py", line 248, in pre_handler_hook
self.saved_sigint_handler = signal(SIGINT, default_int_handler)
ValueError: signal only works in main thread
[I 19:03:26.685 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 928, in start
raise RuntimeError("IOLoop is already running")
RuntimeError: IOLoop is already running
[I 19:03:29.696 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 928, in start
raise RuntimeError("IOLoop is already running")
RuntimeError: IOLoop is already running
[I 19:03:32.712 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 928, in start
raise RuntimeError("IOLoop is already running")
RuntimeError: IOLoop is already running
[W 19:03:33.717 NotebookApp] Timeout waiting for kernel_info reply from 2cf24420-719b-4666-ad9f-fcdf8db505f3
[E 19:03:33.721 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
[E 19:03:34.749 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
[I 19:03:35.724 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports
[E 19:03:35.771 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 928, in start
raise RuntimeError("IOLoop is already running")
RuntimeError: IOLoop is already running
[E 19:03:36.791 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
[E 19:03:37.810 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
[W 19:03:38.733 NotebookApp] KernelRestarter: restart failed
[W 19:03:38.733 NotebookApp] Kernel 2cf24420-719b-4666-ad9f-fcdf8db505f3 died, removing from map.
[W 19:03:38.830 NotebookApp] 404 GET /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels?session_id=3F75F379F865488D8379D3BB7FC0BF0F (::1): Kernel does not exist: 2cf24420-719b-4666-ad9f-fcdf8db505f3
[W 19:03:38.838 NotebookApp] 404 GET /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels?session_id=3F75F379F865488D8379D3BB7FC0BF0F (::1) 12.00ms referer=None
[W 19:03:40.859 NotebookApp] Replacing stale connection: 2cf24420-719b-4666-ad9f-fcdf8db505f3:3F75F379F865488D8379D3BB7FC0BF0F
Running the following version of jupyter and tornado seemed to solve the issue:
Jupyter: 4.4.0
Tornado: 4.5.3
I needed to downgrade my version of tornado (which was 5.0.2)
I faced this problem too. My problem was because of a custom module name. I named the module 'copy.py.' My issue was solved when I renamed it.
I found a way out, Installing Python on my PC solved it. I didn't install python before installing anaconda
I was also facing the kernal related issues and all my problems were solved by installing jupyter notebook from anaconda navigator.
So,The best way to handle jupyter notebook related problems is to install jupyter notebook from anaconda navigator for your environment in which you want to run jupyter notebook. If you will install jupyter notebook from anaconda navigator then you will not face any problem.
I have developed a chat system by Python. libraries been used :easygui,pycrypto,netifaces,stepic,redis,rabbitmq,pika,PIL and setuptools.
all libraries seems installed well refer to : python> import library
by using redis-server on localhost, users can connect to redis and signup,login,chat,.. but when setting redis on different device and change localhost to redis server ip in codes, i receive following errors. (am using lubuntu last version in oracle virtual machine)
enter code here
Traceback (most recent call last):
File "kiducb.py", line 392, in <module>
g = Gui()
File "kiducb.py", line 19, in __init__
self.welcome()
File "kiducb.py", line 33, in welcome
rl = self.login()
File "kiducb.py", line 126, in login
resp = self.check_up(fvals[0], fvals[1], mac)
File "kiducb.py", line 76, in check_up
val = self.re.get(username)
File "/usr/lib/python2.7/dist-packages/redis/client.py", line 423, in get
return self.execute_command('GET', name)
File "/usr/lib/python2.7/dist-packages/redis/client.py", line 283, in execute_command
connection.send_command(*args)
File "/usr/lib/python2.7/dist-packages/redis/connection.py", line 260, in send_command
self.send_packed_command(self.pack_command(*args))
File "/usr/lib/python2.7/dist-packages/redis/connection.py", line 243, in
send_packed_command
self.connect()
File "/usr/lib/python2.7/dist-packages/redis/connection.py", line 191, in connect
raise ConnectionError(self._error_message(e))
redis.exceptions.ConnectionError: Error 111 connecting 10.1.1.12:6379. Connection refused.
to solve this problem, i removed the redis-server which earlier i installed by useing apt-get from system, and i folowed this link instruction: https://www.digitalocean.com/community/articles/how-to-install-and-use-redis
I'm using Aptana and GAE. When I run GAE launcher or run a server in Aptana 3, I get this error... I've downloaded the lastest version of GAE and still doesnt work...
Traceback (most recent call last):
File "C:\google_appengine\dev_appserver.py", line 76, in <module>
run_file(__file__, globals())
File "C:\google_appengine\dev_appserver.py", line 72, in run_file
execfile(script_path, globals_)
File "C:\google_appengine\google\appengine\tools\dev_appserver_main.py", line 665, in <module>
sys.exit(main(sys.argv))
File "C:\google_appengine\google\appengine\tools\dev_appserver_main.py", line 629, in main
static_caching=static_caching)
File "C:\google_appengine\google\appengine\tools\dev_appserver.py", line 4818, in CreateServer
server = HTTPServerWithScheduler((serve_address, port), handler_class)
File "C:\google_appengine\google\appengine\tools\dev_appserver.py", line 4844, in __init__
request_handler_class)
File "C:\Python25\lib\SocketServer.py", line 330, in __init__
self.server_bind()
File "C:\Python25\lib\BaseHTTPServer.py", line 101, in server_bind
SocketServer.TCPServer.server_bind(self)
File "C:\Python25\lib\SocketServer.py", line 341, in server_bind
self.socket.bind(self.server_address)
File "<string>", line 1, in bind
socket.gaierror: (11004, 'getaddrinfo failed')
Exception exceptions.AttributeError: '_shutdown' in <module 'threading' from 'C:\Python25\lib\threading.pyc'> ignored
2011-05-30 21:57:24 (Process exited with code 1)
FIXED! after days looking for this problem: I just deleted this line "0.0.0.0 localhost " from my hosts file located in "C:\Windows\System32\drivers\etc" thanks anyway!!
Had same problem here, I had to add
127.0.0.1 myhostname
and
::1 myhostname
to /etc/hosts