Dead Jupyter Kernel with python3

I am trying to use jupyter notebook with python3. Then I added the kernel with
```
python3 -m pip install ipykernel
python3 -m ipykernel install --user
```
But when I start a notebook it shows a Dead kernel message, and the terminal shows
```
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'
```
If I choose python2 kernel it works well. I can run python command in console without any issue.

Start by reproducing the Python 3 kernel setup with the two commands in the report and capture the kernel startup environment around the Py_Initialize and missing encodings errors. Done means the Python 3 kernel starts successfully in a notebook without the dead-kernel or locale-encoding failure.

Written by the indexing model from the issue text.