jupyter kernelspec list
Available kernels:
**python3 /home/vijay/anaconda3/share/jupyter/kernels/python3
python2 /usr/local/share/jupyter/kernels/python2**
我无法在Jupyter笔记本中将内核从python3切换到python 2.
启动jupyter笔记本时，会显示以下命令
JupyterLab alpha preview extension loaded from /home/vijay/anaconda3/lib/python3.6/site-packages/jupyterlab**
JupyterLab v0.27.0
Known labextensions:
[I 10:51:15.216 NotebookApp] Running the core application with no additional extensions or settings
[I 10:51:15.255 NotebookApp] Serving notebooks from local directory: /home/vijay
[I 10:51:15.255 NotebookApp] 0 active kernels