scilab_kernel exiting with file not found error
Madouc opened this issue · 7 comments
I have installed anaconda with jupyter,
then installed the scilab_kernel as specified in the readme, but when i try to open the example ipynb the kernel fails with the following trace:
[I 18:57:48.669 NotebookApp] KernelRestarter: restarting kernel (4/5)
WARNING:root:kernel 691952f0-c357-487d-bd8b-eddc4a05a04b restarted
Traceback (most recent call last):
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\scilab_kernel\__main__.py", line 6, in <module>
IPKernelApp.launch_instance(kernel_class=ScilabKernel)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\traitlets\config\application.py", line 657, in launch_instance
app.initialize(argv)
File "<decorator-gen-124>", line 2, in initialize
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\traitlets\config\application.py", line 87, in catch_config_error
return method(app, *args, **kwargs)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 457, in initialize
self.init_kernel()
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 368, in init_kernel
user_ns=self.user_ns,
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
inst = cls(*args, **kwargs)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\metakernel\process_metakernel.py", line 54, in __init__
self.wrapper = self.makeWrapper()
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\scilab_kernel\kernel.py", line 81, in makeWrapper
prompt_emit_cmd=prompt_cmd)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\metakernel\replwrap.py", line 65, in __init__
encoding="utf-8")
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\metakernel\pexpect.py", line 31, in spawn
encoding=encoding, codec_errors=codec_errors)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\site-packages\pexpect\popen_spawn.py", line 45, in __init__
self.proc = subprocess.Popen(cmd, **kwargs)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\subprocess.py", line 707, in __init__
restore_signals, start_new_session)
File "C:\Users\BWithagen\AppData\Local\Continuum\Anaconda3\lib\subprocess.py", line 990, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified
[W 18:57:51.682 NotebookApp] KernelRestarter: restart failed
Hi @Madouc, it looks like the Scilab executable directory is not in your PATH environment variable.
Does it work if you use the full name (including the *.exe) in SCILAB_EXECUTABLE?
Closing for lack of response.
I just installed scilab_kernel with pip and I am having this issue. I've put the full name (including the *.exe) in both SCILAB_EXECUTABLE and PATH enviromental variables and the same error happens.
I've made sure Python can see the variable (it does) with os.getenv("SCILAB_EXECUTABLE"). My scilab (64 bit) is installed in C:\scilab-6.0.0\bin\WScilex.exe, Windows 10 (64 bit).
I just realized that my SCILAB_EXECUTABLE enviroment variable was pointing to WScilex.exe, which is the GUI console of Scilab. The NO GUI version is Scilex. And you have changed in that commit the executable in line 62 in kernel.py from Scilex to WScilex. I think that may lead to further issues. Sorry for my mistake.
Anyway: I've corrected my SCILAB_EXECUTABLE variable, reverted scilab_kernel to 0.9.0. The issue still happens in that version (but is corrected in 0.9.1).
We have to use WScilex -nw so that help and plot related functions work (but it shouldn't launch the full Scilab window).