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jupyter-xeus / xeus-python

Jupyter kernel for the Python programming language
BSD 3-Clause "New" or "Revised" License
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Kernel error while starting #239

Open brut0 opened 4 years ago

brut0 commented 4 years ago

I create jupyterlab-debugger. Then install xeus-python from conda promt on Windows 10 using this command: conda install xeus-python notebook -c conda-forge After running Jupyter Notebook and staring kernel I see "Kernel error" with this message

Traceback (most recent call last): File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\tornado\web.py", line 1703, in _execute result = await result File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\tornado\gen.py", line 742, in run yielded = self.gen.throw(exc_info) # type: ignore File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\notebook\services\sessions\handlers.py", line 72, in post type=mtype)) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\tornado\gen.py", line 735, in run value = future.result() File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\tornado\gen.py", line 742, in run yielded = self.gen.throw(exc_info) # type: ignore File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 88, in create_session kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\tornado\gen.py", line 735, in run value = future.result() File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\tornado\gen.py", line 742, in run yielded = self.gen.throw(*exc_info) # type: ignore File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 101, in start_kernel_for_session self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\tornado\gen.py", line 735, in run value = future.result() File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\tornado\gen.py", line 209, in wrapper yielded = next(result) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 168, in start_kernel super(MappingKernelManager, self).start_kernel(kwargs) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\jupyter_client\multikernelmanager.py", line 158, in start_kernel km.start_kernel(kwargs) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\jupyter_client\manager.py", line 305, in start_kernel self.kernel = self._launch_kernel(kernel_cmd, kw) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\jupyter_client\manager.py", line 212, in _launch_kernel return launch_kernel(kernel_cmd, kw) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\jupyter_client\launcher.py", line 135, in launch_kernel proc = Popen(cmd, **kwargs) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\subprocess.py", line 800, in init restore_signals, start_new_session) File "C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\subprocess.py", line 1207, in _execute_child startupinfo) FileNotFoundError: [WinError 2] The system cannot find the file specified

SylvainCorlay commented 4 years ago

Hi @brut0, thanks for posting.

Could you please report what jupyter kernelspec list returns, and the content of the kernel.json corresponding to the xpython entry listed there?

brut0 commented 4 years ago

@SylvainCorlay, thank you for an answer.

Result of jupyter kernelspec list

Available kernels: python3 C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\share\jupyter\kernels\python3 xpython C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\share\jupyter\kernels\xpython

kernel.json:

{
  "display_name": "xpython",
  "argv": [
      "D:/bld/xeus-python_1585147714833/_h_env/Library/bin/xpython",
      "-f",
      "{connection_file}"
  ],
  "language": "python"
}

It seems that path to interpreter is wrong. I change path to

C:/ProgramData/Anaconda3/envs/jupyterlab-debugger/Library/bin\xpython.exe

After that another error message is shown

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.

SylvainCorlay commented 4 years ago 
  "D:/bld/xeus-python_1585147714833/_h_env/Library/bin/xpython",

It seems that the conda package manager did not properly perform the relocation unfortunately. This is weird because we rely on this heavily and it is supposed to work.

another error message is shown

Can you show the content of the console where the server is started?

SylvainCorlay commented 4 years ago

OK, the relocation issue of kernel.json is due to the fact that this conda package was built with conda-build 3.19 which happens to be completely broken.

https://github.com/conda-forge/cf-mark-broken/pull/31

SylvainCorlay commented 4 years ago

@brut0 can you try by pinning xeus-python 0.6.12 which was built with a non-broken conda-build?

brut0 commented 4 years ago

Console content from jupyter start until kernel connection error (sorry if it is too big)

[I 21:12:43.054 NotebookApp] The port 8888 is already in use, trying another port. [I 21:12:43.054 NotebookApp] The port 8889 is already in use, trying another port. [I 21:12:43.055 NotebookApp] The port 8890 is already in use, trying another port. [I 21:12:43.764 NotebookApp] JupyterLab extension loaded from C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\jupyterlab [I 21:12:43.764 NotebookApp] JupyterLab application directory is C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\share\jupyter\lab [I 21:12:43.767 NotebookApp] Serving notebooks from local directory: C:\Users\Сергей [I 21:12:43.767 NotebookApp] The Jupyter Notebook is running at: [I 21:12:43.767 NotebookApp] http://localhost:8891/?token=0f77eea918cd42336b6511cca623868c74fcebb96ee31db2 [I 21:12:43.768 NotebookApp] or http://127.0.0.1:8891/?token=0f77eea918cd42336b6511cca623868c74fcebb96ee31db2 [I 21:12:43.768 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation). [C 21:12:43.894 NotebookApp] To access the notebook, open this file in a browser: file:///C:/Users/%D0%A1%D0%B5%D1%80%D0%B3%D0%B5%D0%B9/AppData/Roaming/jupyter/runtime/nbserver-5160-open.html Or copy and paste one of these URLs: http://localhost:8891/?token=0f77eea918cd42336b6511cca623868c74fcebb96ee31db2 or http://127.0.0.1:8891/?token=0f77eea918cd42336b6511cca623868c74fcebb96ee31db2 [I 21:13:25.785 NotebookApp] 302 GET /?token=0f77eea918cd42336b6511cca623868c74fcebb96ee31db2 (::1) 1.00ms [I 21:13:31.248 NotebookApp] Creating new notebook in [I 21:13:32.236 NotebookApp] Kernel started: ab38c4e9-071b-4e91-93f5-78429fcfad02 [W 21:13:32.255 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20200331211242 (::1) 14.99ms referer=http://localhost:8891/notebooks/Untitled1.ipynb?kernel_name=xpython PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ Python sys.path set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\python37.zip;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\DLLs;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\lib;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin [I 21:13:35.228 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ Python sys.path set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\python37.zip;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\DLLs;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\lib;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin [I 21:13:38.221 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ Python sys.path set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\python37.zip;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\DLLs;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\lib;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin [I 21:13:41.225 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ Python sys.path set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\python37.zip;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\DLLs;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\lib;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin [I 21:13:44.232 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ Python sys.path set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\python37.zip;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\DLLs;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\lib;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin [W 21:13:47.240 NotebookApp] KernelRestarter: restart failed [W 21:13:47.240 NotebookApp] Kernel ab38c4e9-071b-4e91-93f5-78429fcfad02 died, removing from map. [W 21:14:32.254 NotebookApp] Timeout waiting for kernel_info reply from ab38c4e9-071b-4e91-93f5-78429fcfad02 [E 21:14:32.255 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: ab38c4e9-071b-4e91-93f5-78429fcfad02) [W 21:14:33.942 NotebookApp] 404 GET /api/kernels/ab38c4e9-071b-4e91-93f5-78429fcfad02/channels?session_id=2fc296bb79384ddcb8277c7e7e0e50f7 (::1): Kernel does not exist: ab38c4e9-071b-4e91-93f5-78429fcfad02 [W 21:14:33.943 NotebookApp] 404 GET /api/kernels/ab38c4e9-071b-4e91-93f5-78429fcfad02/channels?session_id=2fc296bb79384ddcb8277c7e7e0e50f7 (::1) 3.00ms referer=None [W 21:14:36.944 NotebookApp] Replacing stale connection: ab38c4e9-071b-4e91-93f5-78429fcfad02:2fc296bb79384ddcb8277c7e7e0e50f7

SylvainCorlay commented 4 years ago

OK, I suspect that the conda package for 0.6.13 is broken in several ways because of that conda bug.

Let me know if reverting to 0.6.12 fixes your issue. (I just tested locally and all is fine).

I am making a new build of 0.6.13.

brut0 commented 4 years ago

I reverted to 0.6.12. Now kernel.json looks like:

{
  "display_name": "xpython",
  "argv": [
      "C:/ProgramData/Anaconda3/envs/jupyterlab-debugger/Library/bin/xpython",
      "-f",
      "{connection_file}"
  ],
  "language": "python"
}

But, connection to kernel failed anyway:

[I 21:30:49.149 NotebookApp] The port 8888 is already in use, trying another port. [I 21:30:49.150 NotebookApp] The port 8889 is already in use, trying another port. [I 21:30:49.150 NotebookApp] The port 8890 is already in use, trying another port. [I 21:30:49.868 NotebookApp] JupyterLab extension loaded from C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\lib\site-packages\jupyterlab [I 21:30:49.868 NotebookApp] JupyterLab application directory is C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\share\jupyter\lab [I 21:30:49.871 NotebookApp] Serving notebooks from local directory: C:\Users\Сергей [I 21:30:49.871 NotebookApp] The Jupyter Notebook is running at: [I 21:30:49.871 NotebookApp] http://localhost:8891/?token=72b3a53da0abc1dc21d855666f1829f823cec8cfc663c93a [I 21:30:49.871 NotebookApp] or http://127.0.0.1:8891/?token=72b3a53da0abc1dc21d855666f1829f823cec8cfc663c93a [I 21:30:49.871 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation). [C 21:30:49.996 NotebookApp] ... [I 21:30:59.915 NotebookApp] Creating new notebook in [I 21:31:01.179 NotebookApp] Kernel started: e79286ab-04aa-4198-a0da-0673a709f8bc [W 21:31:01.197 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20200331213048 (127.0.0.1) 15.99ms referer=http://127.0.0.1:8891/notebooks/Untitled2.ipynb?kernel_name=xpython PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ [I 21:31:04.162 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ [I 21:31:07.161 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ [I 21:31:10.170 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ [I 21:31:13.178 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ [W 21:31:16.185 NotebookApp] KernelRestarter: restart failed [W 21:31:16.185 NotebookApp] Kernel e79286ab-04aa-4198-a0da-0673a709f8bc died, removing from map. [W 21:32:01.214 NotebookApp] Timeout waiting for kernel_info reply from e79286ab-04aa-4198-a0da-0673a709f8bc [E 21:32:01.215 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: e79286ab-04aa-4198-a0da-0673a709f8bc) [W 21:32:02.235 NotebookApp] 404 GET /api/kernels/e79286ab-04aa-4198-a0da-0673a709f8bc/channels?session_id=4d3d6fcb3eba4f5296404103d42bd65e (127.0.0.1): Kernel does not exist: e79286ab-04aa-4198-a0da-0673a709f8bc [W 21:32:02.237 NotebookApp] 404 GET /api/kernels/e79286ab-04aa-4198-a0da-0673a709f8bc/channels?session_id=4d3d6fcb3eba4f5296404103d42bd65e (127.0.0.1) 3.00ms referer=None

SylvainCorlay commented 4 years ago

If you just run xpython in your environment what do you see?

brut0 commented 4 years ago

xpython does not run. only this message has been shown:

PYTHONHOME set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\ Starting xeus-python kernel...

If you want to connect to this kernel from an other client, just copy and paste the following content inside of a kernel.json file. And then run for example:

# jupyter console --existing kernel.json

kernel.json

{
    "transport": "tcp",
    "ip": "127.0.0.1",
    "control_port": 58300 ,
    "shell_port": 51018 ,
    "stdin_port": 55647 ,
    "iopub_port": 50916 ,
    "hb_port": 63521 ,
    "signature_scheme": "hmac-sha256",
    "key": "c95b591e24504a71a162a39cdfa96af9"
}
SylvainCorlay commented 4 years ago

Ok, that means it does run. This is the expected behavior (to show the connection information). In your logs, the lines

Python sys.path set to C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\python37.zip;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\DLLs;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin....\lib;C:\ProgramData\Anaconda3\envs\jupyterlab-debugger\Library\bin

corresponds to some logs we print when starting the kernel. So somethings makes it crash at a later stage.

Could you please report the output of conda list in your environment?

brut0 commented 4 years ago

@SylvainCorlay, thanks for clarifying.

Output of conda list:

# packages in environment at C:\ProgramData\Anaconda3\envs\jupyterlab-debugger: # Name Version Build Channel attrs 19.3.0 py_0 conda-forge backcall 0.1.0 py_0 conda-forge bleach 3.1.4 pyh9f0ad1d_0 conda-forge ca-certificates 2019.11.28 hecc5488_0 conda-forge certifi 2019.11.28 py37hc8dfbb8_1 conda-forge cffi 1.14.0 py37ha419a9e_0 conda-forge chardet 3.0.4 py37hc8dfbb8_1006 conda-forge cmake 3.17.0 he025d50_0 conda-forge colorama 0.4.3 py_0 conda-forge cryptography 2.8 py37hb32ad35_1 conda-forge decorator 4.4.2 py_0 conda-forge defusedxml 0.6.0 py_0 conda-forge entrypoints 0.3 py37hc8dfbb8_1001 conda-forge idna 2.9 py_1 conda-forge importlib-metadata 1.6.0 py37hc8dfbb8_0 conda-forge importlib_metadata 1.6.0 0 conda-forge ipykernel 5.2.0 py37h5ca1d4c_1 conda-forge ipython 7.13.0 py37hc8dfbb8_2 conda-forge ipython_genutils 0.2.0 py_1 conda-forge jedi 0.15.2 py37_0 conda-forge jinja2 2.11.1 py_0 conda-forge json5 0.9.0 py_0 conda-forge jsonschema 3.2.0 py37hc8dfbb8_1 conda-forge jupyter_client 6.1.2 py_0 conda-forge jupyter_core 4.6.3 py37hc8dfbb8_1 conda-forge jupyterlab 2.0.1 py_0 conda-forge jupyterlab_server 1.1.0 py_0 conda-forge libsodium 1.0.17 h2fa13f4_0 conda-forge m2w64-gcc-libgfortran 5.3.0 6
m2w64-gcc-libs 5.3.0 7
m2w64-gcc-libs-core 5.3.0 7
m2w64-gmp 6.1.0 2
m2w64-libwinpthread-git 5.0.0.4634.697f757 2
markupsafe 1.1.1 py37h8055547_1 conda-forge mistune 0.8.4 py37hfa6e2cd_1000 conda-forge msys2-conda-epoch 20160418 1
nbconvert 5.6.1 py37_0 conda-forge nbformat 5.0.4 py_0 conda-forge nlohmann_json 3.7.3 he025d50_1 conda-forge notebook 6.0.3 py37_0 conda-forge openssl 1.1.1f hfa6e2cd_0 conda-forge pandoc 2.9.2 0 conda-forge pandocfilters 1.4.2 py_1 conda-forge parso 0.6.2 py_0 conda-forge pickleshare 0.7.5 py37hc8dfbb8_1001 conda-forge pip 20.0.2 py_2 conda-forge prometheus_client 0.7.1 py_0 conda-forge prompt-toolkit 3.0.5 py_0 conda-forge ptvsd 4.3.2 py37hfa6e2cd_1 conda-forge pybind11_json 0.2.4 py37heaa310e_1 conda-forge pycparser 2.20 py_0 conda-forge pygments 2.6.1 py_0 conda-forge pyopenssl 19.1.0 py_1 conda-forge pyrsistent 0.16.0 py37h8055547_0 conda-forge pysocks 1.7.1 py37hc8dfbb8_1 conda-forge python 3.7.6 h60c2a47_5_cpython conda-forge python-dateutil 2.8.1 py_0 conda-forge python_abi 3.7 1_cp37m conda-forge pywin32 227 py37hfa6e2cd_0 conda-forge pywinpty 0.5.7 py37_0 conda-forge pyzmq 19.0.0 py37h8c16cda_1 conda-forge requests 2.23.0 pyh8c360ce_2 conda-forge send2trash 1.5.0 py_0 conda-forge setuptools 46.1.3 py37hc8dfbb8_0 conda-forge six 1.14.0 py_1 conda-forge sqlite 3.30.1 hfa6e2cd_0 conda-forge terminado 0.8.3 py37hc8dfbb8_1 conda-forge testpath 0.4.4 py_0 conda-forge tornado 6.0.4 py37hfa6e2cd_0 conda-forge traitlets 4.3.3 py37hc8dfbb8_1 conda-forge urllib3 1.25.7 py37hc8dfbb8_1 conda-forge vc 14.1 h869be7e_1 conda-forge vs2015_runtime 14.16.27012 h30e32a0_1 conda-forge wcwidth 0.1.9 pyh9f0ad1d_0 conda-forge webencodings 0.5.1 py_1 conda-forge wheel 0.34.2 py_1 conda-forge win_inet_pton 1.1.0 py37_0 conda-forge wincertstore 0.2 py37_1003 conda-forge winpty 0.4.3 4 conda-forge xeus 0.23.10 h1ad3211_0 conda-forge xeus-python 0.6.12 py37h1ad3211_1 conda-forge xtl 0.6.13 h1ad3211_0 conda-forge zeromq 4.3.2 h6538335_2 conda-forge zipp 3.1.0 py_0 conda-forge

brut0 commented 4 years ago

I reinstalled xeus python and jupyterlab in new environment using this command conda create -n jupyterlab-debugger -c conda-forge xeus-python=0.6.12 notebook=6 jupyterlab=2 ptvsd

But, the problem is same

kernel.json:

{
  "display_name": "xpython",
  "argv": [
      "C:/ProgramData/Anaconda3/envs/xpython-debugger/Library/bin/xpython",
      "-f",
      "{connection_file}"
  ],
  "language": "python"
}

Output of Jupyter Notebook:

[I 20:40:50.279 NotebookApp] Kernel started: 7e4e2f5d-ec04-402c-99d3-7032dc2322d0 PYTHONHOME set to C:\ProgramData\Anaconda3\envs\xpython-debugger\Library\bin....\ [I 20:40:53.279 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\xpython-debugger\Library\bin....\ [I 20:40:56.287 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\xpython-debugger\Library\bin....\ [I 20:40:59.288 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\xpython-debugger\Library\bin....\ [I 20:41:02.297 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports PYTHONHOME set to C:\ProgramData\Anaconda3\envs\xpython-debugger\Library\bin....\ [W 20:41:05.305 NotebookApp] KernelRestarter: restart failed [W 20:41:05.305 NotebookApp] Kernel 7e4e2f5d-ec04-402c-99d3-7032dc2322d0 died, removing from map. [W 20:41:50.287 NotebookApp] Timeout waiting for kernel_info reply from 7e4e2f5d-ec04-402c-99d3-7032dc2322d0 [E 20:41:50.288 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: 7e4e2f5d-ec04-402c-99d3-7032dc2322d0) [W 20:41:51.307 NotebookApp] 404 GET /api/kernels/7e4e2f5d-ec04-402c-99d3-7032dc2322d0/channels?session_id=48e5e6b561eb4f6fb970d91ab00bbb83 (::1): Kernel does not exist: 7e4e2f5d-ec04-402c-99d3-7032dc2322d0 [W 20:41:51.308 NotebookApp] 404 GET /api/kernels/7e4e2f5d-ec04-402c-99d3-7032dc2322d0/channels?session_id=48e5e6b561eb4f6fb970d91ab00bbb83 (::1) 3.00ms referer=None

conda list

# packages in environment at C:\ProgramData\Anaconda3\envs\xpython-debugger: # Name Version Build Channel attrs 19.3.0 py_0 conda-forge backcall 0.1.0 py_0 conda-forge bleach 3.1.4 pyh9f0ad1d_0 conda-forge ca-certificates 2019.11.28 hecc5488_0 conda-forge certifi 2019.11.28 py37hc8dfbb8_1 conda-forge cffi 1.14.0 py37ha419a9e_0 conda-forge chardet 3.0.4 py37hc8dfbb8_1006 conda-forge colorama 0.4.3 py_0 conda-forge cryptography 2.8 py37hb32ad35_1 conda-forge decorator 4.4.2 py_0 conda-forge defusedxml 0.6.0 py_0 conda-forge entrypoints 0.3 py37hc8dfbb8_1001 conda-forge idna 2.9 py_1 conda-forge importlib-metadata 1.6.0 py37hc8dfbb8_0 conda-forge importlib_metadata 1.6.0 0 conda-forge ipykernel 5.2.0 py37h5ca1d4c_1 conda-forge ipython 7.13.0 py37hc8dfbb8_2 conda-forge ipython_genutils 0.2.0 py_1 conda-forge jedi 0.15.2 py37_0 conda-forge jinja2 2.11.1 py_0 conda-forge json5 0.9.0 py_0 conda-forge jsonschema 3.2.0 py37hc8dfbb8_1 conda-forge jupyter_client 6.1.2 py_0 conda-forge jupyter_core 4.6.3 py37hc8dfbb8_1 conda-forge jupyterlab 2.0.1 py_0 conda-forge jupyterlab_server 1.1.0 py_0 conda-forge libsodium 1.0.17 h2fa13f4_0 conda-forge m2w64-gcc-libgfortran 5.3.0 6
m2w64-gcc-libs 5.3.0 7
m2w64-gcc-libs-core 5.3.0 7
m2w64-gmp 6.1.0 2
m2w64-libwinpthread-git 5.0.0.4634.697f757 2
markupsafe 1.1.1 py37h8055547_1 conda-forge mistune 0.8.4 py37hfa6e2cd_1000 conda-forge msys2-conda-epoch 20160418 1
nbconvert 5.6.1 py37_0 conda-forge nbformat 5.0.4 py_0 conda-forge notebook 6.0.3 py37_0 conda-forge openssl 1.1.1f hfa6e2cd_0 conda-forge pandoc 2.9.2 0 conda-forge pandocfilters 1.4.2 py_1 conda-forge parso 0.6.2 py_0 conda-forge pickleshare 0.7.5 py37hc8dfbb8_1001 conda-forge pip 20.0.2 py_2 conda-forge prometheus_client 0.7.1 py_0 conda-forge prompt-toolkit 3.0.5 py_0 conda-forge ptvsd 4.3.2 py37hfa6e2cd_1 conda-forge pycparser 2.20 py_0 conda-forge pygments 2.6.1 py_0 conda-forge pyopenssl 19.1.0 py_1 conda-forge pyrsistent 0.16.0 py37h8055547_0 conda-forge pysocks 1.7.1 py37hc8dfbb8_1 conda-forge python 3.7.6 h60c2a47_5_cpython conda-forge python-dateutil 2.8.1 py_0 conda-forge python_abi 3.7 1_cp37m conda-forge pywin32 227 py37hfa6e2cd_0 conda-forge pywinpty 0.5.7 py37_0 conda-forge pyzmq 19.0.0 py37h8c16cda_1 conda-forge requests 2.23.0 pyh8c360ce_2 conda-forge send2trash 1.5.0 py_0 conda-forge setuptools 46.1.3 py37hc8dfbb8_0 conda-forge six 1.14.0 py_1 conda-forge sqlite 3.30.1 hfa6e2cd_0 conda-forge terminado 0.8.3 py37hc8dfbb8_1 conda-forge testpath 0.4.4 py_0 conda-forge tornado 6.0.4 py37hfa6e2cd_0 conda-forge traitlets 4.3.3 py37hc8dfbb8_1 conda-forge urllib3 1.25.7 py37hc8dfbb8_1 conda-forge vc 14.1 h869be7e_1 conda-forge vs2015_runtime 14.16.27012 h30e32a0_1 conda-forge wcwidth 0.1.9 pyh9f0ad1d_0 conda-forge webencodings 0.5.1 py_1 conda-forge wheel 0.34.2 py_1 conda-forge win_inet_pton 1.1.0 py37_0 conda-forge wincertstore 0.2 py37_1003 conda-forge winpty 0.4.3 4 conda-forge xeus 0.23.10 h1ad3211_0 conda-forge xeus-python 0.6.12 py37h1ad3211_1 conda-forge zeromq 4.3.2 h6538335_2 conda-forge zipp 3.1.0 py_0 conda-forge

SylvainCorlay commented 4 years ago

@brut0 I don't know what is the problem here as we are not reproducing. Marked the issue as "Bug".