jupyter-client has to be installed but “jupyter kernelspec --version” exited with code 127

Question

I have already installed Jupyter notebook in my ubuntu 16.04 machine. In jupyter notebook there is by default python installed. Now I want to use R from jupyter notebook.

Answer 1

I had the same error while trying to install my environment as kernel in Jupyter. First I had created a new environment, installed R, IRkernel and devtools from within conda prompt, then runned R typing R from the prompt and typing

IRkernel::installspec(name = 'myenvname', displayname = 'myenvname')

I had the same error. I solved simply in this way:

conda install -c anaconda jupyter_client

And then retyping the previous code it just worked.