Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Spyder IPython Kernel crash

See original GitHub issue

Description

What steps will reproduce the problem?

Install Anaconda3-2021.05-Windows-x86_64

update all packages: conda update --all

run this code:

import matplotlib.pyplot as plt from mpl_toolkits.axes_grid1 import host_subplot

plt.figure(figsize=[10,5]) host = host_subplot(111)

–>Kernel restarts after a short time

Traceback

Traceback (most recent call last):
  File "Anaconda3\lib\site-packages\qtconsole\manager.py", line 27, in poll
    super().poll()
  File "Anaconda3\lib\site-packages\jupyter_client\restarter.py", line 127, in poll
    self.kernel_manager.restart_kernel(now=True, newports=newports)
  File "\Anaconda3\lib\site-packages\jupyter_client\utils.py", line 25, in wrapped
    return loop.run_until_complete(coro(*args, **kwargs))
  File "\Anaconda3\lib\site-packages\nest_asyncio.py", line 70, in run_until_complete
    return f.result()
  File "\Anaconda3\lib\asyncio\futures.py", line 178, in result
    raise self._exception
  File "\Anaconda3\lib\asyncio\tasks.py", line 280, in __step
    result = coro.send(None)
  File "\Anaconda3\lib\site-packages\jupyter_client\manager.py", line 477, in _async_restart_kernel
    await ensure_async(self.shutdown_kernel(now=now, restart=True))
  File "\Anaconda3\lib\site-packages\jupyter_client\utils.py", line 25, in wrapped
    return loop.run_until_complete(coro(*args, **kwargs))
  File "\Anaconda3\lib\site-packages\nest_asyncio.py", line 70, in run_until_complete
    return f.result()
  File "\Anaconda3\lib\asyncio\futures.py", line 178, in result
    raise self._exception
  File "\Anaconda3\lib\asyncio\tasks.py", line 280, in __step
    result = coro.send(None)
  File "\Anaconda3\lib\site-packages\jupyter_client\manager.py", line 436, in _async_shutdown_kernel
    await ensure_async(self._kill_kernel())
  File "\Anaconda3\lib\site-packages\spyder\plugins\ipythonconsole\utils\manager.py", line 92, in _kill_kernel
    self.kill_proc_tree(self.kernel.pid)
AttributeError: 'SpyderKernelManager' object has no attribute 'kernel'

Versions

Spyder version: 5.0.5
Python version: 3.8.12
Qt version: 5.9.7
PyQt5 version: 5.9.2
Operating System: Windows 10

Dependencies


# Mandatory:
atomicwrites >=1.2.0          :  1.4.0 (OK)
chardet >=2.0.0               :  4.0.0 (OK)
cloudpickle >=0.5.0           :  2.0.0 (OK)
cookiecutter >=1.6.0          :  1.7.2 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree >=3.0.2          :  3.1.0 (OK)
IPython >=7.6.0               :  7.29.0 (OK)
jedi =0.17.2                  :  0.17.2 (OK)
jsonschema >=3.2.0            :  3.2.0 (OK)
keyring >=17.0.0              :  23.1.0 (OK)
nbconvert >=4.0               :  6.1.0 (OK)
numpydoc >=0.6.0              :  1.1.0 (OK)
paramiko >=2.4.0              :  2.7.2 (OK)
parso =0.7.0                  :  0.7.0 (OK)
pexpect >=4.4.0               :  4.8.0 (OK)
pickleshare >=0.4             :  0.7.5 (OK)
psutil >=5.3                  :  5.8.0 (OK)
pygments >=2.0                :  2.10.0 (OK)
pylint >=1.0                  :  2.9.6 (OK)
pyls >=0.36.2;<1.0.0          :  0.36.2 (OK)
pyls_black >=0.4.6            :  0.4.6 (OK)
pyls_spyder >=0.3.2;<0.4.0    :  0.3.2 (OK)
qdarkstyle =3.0.2             :  3.0.2 (OK)
qstylizer >=0.1.10            :  0.1.10 (OK)
qtawesome >=1.0.2             :  1.0.2 (OK)
qtconsole >=5.1.0             :  5.1.1 (OK)
qtpy >=1.5.0                  :  1.10.0 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=39.0.0           :  58.0.4 (OK)
sphinx >=0.6.6                :  4.2.0 (OK)
spyder_kernels >=2.0.4;<2.1.0 :  2.0.5 (OK)
textdistance >=4.2.0          :  4.2.1 (OK)
three_merge >=0.1.1           :  0.1.1 (OK)
watchdog >=0.10.3             :  2.1.3 (OK)
zmq >=17                      :  22.2.1 (OK)

# Optional:
cython >=0.21                 :  0.29.24 (OK)
matplotlib >=2.0.0            :  3.4.3 (OK)
numpy >=1.7                   :  1.20.3 (OK)
pandas >=1.1.1                :  1.3.4 (OK)
scipy >=0.17.0                :  1.7.1 (OK)
sympy >=0.7.3                 :  1.9 (OK)