我正在运行一台带有PyQ内核的jupyter笔记本电脑,可以同时运行python和Q代码。但是:每当一个单元产生错误(比如调用nonexisting_function())时,在我重新启动内核之前,不会执行更多的单元。相比之下,使用Python内核,我也可以在出错后运行其他(或相同)单元,我认为这是正常行为。

我在64位ubuntu上使用带有虚拟环境(mypyq)的miniconda3。
(mypyq) user@workstation:~$ conda --version
conda 4.5.11
(mypyq) user@workstation:~$ conda list
# packages in environment at /home/user/miniconda3/envs/mypyq:
#
# Name Version Build Channel
<lines skipped>
kdb 3.6 2018.10.23 kx
pyq 4.1.4 py36h39e3cac_0 enlnt
pyq-kernel 1.0 <pip>
python 3.6.7 h0371630_0
(mypyq) user@workstation:~$ jupyter notebook --debug
<lines skipped>在笔记本中运行6*7:
[D 09:37:54.476 NotebookApp] activity on ...: status
[D 09:37:54.476 NotebookApp] activity on ...: execute_input
[D 09:37:54.477 NotebookApp] activity on ...: execute_result
[D 09:37:54.479 NotebookApp] activity on ...: status单元格输出为42,到目前为止一切正常。
现在在笔记本中运行nonexisting():
[D 09:38:38.266 NotebookApp] activity on ...: status
[D 09:38:38.267 NotebookApp] activity on ...: execute_input
[D 09:38:38.315 NotebookApp] activity on ...: error
[D 09:38:38.317 NotebookApp] activity on ...: statusNotebook单元格输出:
------------------------------------
NameError Traceback (most recent call last)
<ipython-input-2-124a31d9d771> in <module>
----> 1 nonexisting()
NameError: name 'nonexisting' is not defined再次运行6*7单元:
[D 09:39:29.799 NotebookApp] activity on ...: status
[D 09:39:29.799 NotebookApp] activity on ...: status我在控制台里至少少了...: execute_result。而且在我重启内核之前,笔记本中也没有输出。
这不会发生在Python内核中,只会发生在PyQ内核中。在控制台中运行PyQ也没问题:
(mypyq) user@workstation:~$ pyq
Python 3.6.7 |Anaconda, Inc.| (default, Oct 23 2018, 19:19:38)
[GCC 7.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> q('9#til 3')
k('0 1 2 0 1 2 0 1 2')
>>> nonexisting()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'nonexisting' is not defined
>>> 6*7
42
>>> exit()IPython也没问题:
(mypyq) user@workstation:~$ pyq -m IPython
Python 3.6.7 |Anaconda, Inc.| (default, Oct 23 2018, 19:19:38)
Type 'copyright', 'credits' or 'license' for more information
IPython 7.2.0 -- An enhanced Interactive Python. Type '?' for help.
In [1]: %load_ext pyq.magic
In [2]: from pyq import q
In [3]: q.til(10)
Out[3]: 0 1 2 3 4 5 6 7 8 9
In [4]: nonexisting()
-------------------------------------------------------
NameError Traceback (most recent call last)
<ipython-input-4-124a31d9d771> in <module>
----> 1 nonexisting()
NameError: name 'nonexisting' is not defined
In [5]: q.til(10)
Out[5]: 0 1 2 3 4 5 6 7 8 9
In [6]: exit()在运行错误单元后,当我使用Ctrl-C关闭jupyter笔记本服务器时,它报告超时并杀死内核。
Shutdown this notebook server (y/[n])? y
[C 11:03:05.086 NotebookApp] Shutdown confirmed
[I 11:03:05.086 NotebookApp] Shutting down 1 kernel
[D 11:03:10.100 NotebookApp] Kernel is taking too long to finish, killing
[I 11:03:10.106 NotebookApp] Kernel shutdown:发布于 2018-12-20 21:22:42
此错误已在pyq-kernel 1.0.1, which was recently released中修复。谢谢你的报告。
要升级,请运行:
pip install -U pyq-kernel
pyq -m pyq.kernel install将来,请随时在PyQ project repository中打开问题,以便更快地响应。
https://stackoverflow.com/questions/53739406
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