The kernel did not respond to an is_complete_request

[muyuballs]

The kernel did not respond to an is_complete_request. Setting use_kernel_is_complete to False. warn('The kernel did not respond to an is_complete_request. ') sys: debian9 amd64 jupyter:4.4.0 zmq:libzmq3-dev(4.2.1-4)

[cosmos72]

Hello, can you please provide the steps to reproduce this problem?

[jstaf]

On Linux, you can reproduce this with the following (only place I've noticed it so far is in jupyter console):

To install:

go get -u github.com/gopherdata/gophernotes
mkdir -p ~/.local/share/jupyter/kernels/gophernotes
cp $GOPATH/src/github.com/gopherdata/gophernotes/kernel/* ~/.local/share/jupyter/kernels/gophernotes

To reproduce:

$ jupyter console --kernel=gophernotes
2019/02/18 12:06:05 Unhandled shell message:  history_request
/home/jstaf/.local/lib/python3.7/site-packages/jupyter_console/ptshell.py:103: UserWarning: No lexer found for language ''. Treating as plain text.
  warn("No lexer found for language %r. Treating as plain text." % name)
Jupyter console 6.0.0

Go kernel: gophernotes - v1.0.0


In [1]: import "fmt"2019/02/18 12:06:16 Unhandled shell message:  is_complete_request                                                            
In [1]: import "fmt"                                                                                                                             
/home/jstaf/.local/lib/python3.7/site-packages/jupyter_console/ptshell.py:661: UserWarning: The kernel did not respond to an is_complete_request. Setting `use_kernel_is_complete` to False.
  warn('The kernel did not respond to an is_complete_request. '

[jstaf]

Hmmm, looks like you can "fix" the warning with --ZMQTerminalInteractiveShell.use_kernel_is_complete option:

$ jupyter console --kernel=gophernotes --ZMQTerminalInteractiveShell.use_kernel_is_complete=False
2019/02/18 12:06:05 Unhandled shell message:  history_request
/home/jstaf/.local/lib/python3.7/site-packages/jupyter_console/ptshell.py:103: UserWarning: No lexer found for language ''. Treating as plain text.
  warn("No lexer found for language %r. Treating as plain text." % name)
Jupyter console 6.0.0

Go kernel: gophernotes - v1.0.0


In [1]: import "fmt" 
      :  
      :                                                                                                                                          

In [2]: fmt.Println("test") 
      :  
      :                                                                                                                                          
test

Much quieter :smile:

[mackong]

I just commit a pr, see #230