error messages from json/decoder.py ? #22

Activity

1. Bachmann1234 commented on Sep 30, 2016

   

   Bachmann1234

   on Sep 30, 2016

   Owner

   More actions

   Can you post your kernal config json? That error suggests there is an error in parsing that file. Looks like a comma missing.
2. chi-hung commented on Oct 9, 2016

   

   chi-hung

   on Oct 9, 2016

   Author

   More actions

   Here it is. Sorry for the late reply. By the way, in order to see if jshell works, I switched to java9 and typed java -jar kulla.jar in terminal. I find out that the jshell can start and I can do some basic stuffs interactively without problem. So, could it be something wrong between Python and the java kernel?

     1 { 
     2  "argv": ["python3", "/Users/chweng/javakernel",
     3           "-f", "{connection_file}"],
     4  "display_name": "Java 9",
     5  "language": "java"
     6  "env" : {
     7      "JAVA_9_HOME": "/Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home",
     8      "KULLA_HOME": "/Users/chweng/kulla/kulla.jar"
     9      }   
    10 } 
   
3. chi-hung commented on Oct 9, 2016

   

   chi-hung

   on Oct 9, 2016

   Author

   More actions

   uh..., you are right. There's a comma missing at line 5. Now, the following is my new kernel config. (I wasn't sure if it is necessary to add the -f {connection file}?)

     1 {
     2  "argv": ["python3", "/Users/chweng/javakernel"],
     3  "display_name": "Java 9",
     4  "language": "java",
     5  "env" : {
     6      "JAVA_9_HOME": "/Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home",
     7      "KULLA_HOME": "/Users/chweng/kulla/kulla.jar"
     8      }
     9 }
   

   Anyway, after typing

   jupyter console --kernel java

   I still get some error messages:

   Traceback (most recent call last):
   File "/usr/local/lib/python3.5/site-packages/jupyter_console/ptshell.py", line 302, in init_kernel_info
   reply = self.client.get_shell_msg(timeout=1)
   File "/usr/local/lib/python3.5/site-packages/jupyter_client/client.py", line 77, in get_shell_msg
   return self.shell_channel.get_msg(_args, *_kwargs)
   File "/usr/local/lib/python3.5/site-packages/jupyter_client/blocking/channels.py", line 57, in get_msg
   raise Empty
   queue.Empty

   During handling of the above exception, another exception occurred:

   Traceback (most recent call last):
   File "/usr/local/bin/jupyter-console", line 11, in
   sys.exit(main())
   File "/usr/local/lib/python3.5/site-packages/jupyter_core/application.py", line 267, in launch_instance
   return super(JupyterApp, cls).launch_instance(argv=argv, *_kwargs)
   File "/usr/local/lib/python3.5/site-packages/traitlets/config/application.py", line 657, in launch_instance
   app.initialize(argue
   File "", line 2, in initialize
   File "/usr/local/lib/python3.5/site-packages/traitlets/config/application.py", line 87, in catch_config_error
   return method(app, *args, *_kwargs)
   File "/usr/local/lib/python3.5/site-packages/jupyter_console/app.py", line 137, in initialize
   self.init_shell()
   File "/usr/local/lib/python3.5/site-packages/jupyter_console/app.py", line 110, in init_shell
   client=self.kernel_client,
   File "/usr/local/lib/python3.5/site-packages/traitlets/config/configurable.py", line 412, in instance
   inst = cls(_args, *_kwargs)
   File "/usr/local/lib/python3.5/site-packages/jupyter_console/ptshell.py", line 251, in init
   self.init_kernel_info()
   File "/usr/local/lib/python3.5/site-packages/jupyter_console/ptshell.py", line 305, in init_kernel_info
   raise RuntimeError("Kernel didn't respond to kernel_info_request")
   RuntimeError: Kernel didn't respond to kernel_info_request)

   It appeared that the kernel died somehow?
4. Bachmann1234 commented on Oct 11, 2016

   

   Bachmann1234

   on Oct 11, 2016

   Owner

   More actions

   Yeah, I think the kernel is broken. Not sure why. Im thinking something changes in ipython but I am not likely going to be able to look into this for a while