如何在Jupyter笔记本中获取活动内核名称

问题描述：

我想制作一个打印活动内核名称的笔记本。
我使用

I would like to make a notebook that prints the active kernel name. I registered multiple venvs as kernels using the

python -m ipykernel install --user --name <kernel_name>

在笔记本中我想打印一些关于活动内核的元数据。

In the notebook I would like to print some metadata about the active kernel.

如何获得活动内核的名称？

How can one get the name of the active kernel?

编辑：

以下是我的堆栈中的特定版本

Here are the particular versions in my stack

ipykernel==4.5.2
ipython==5.3.0
jupyter==1.0.0

尽管如此，这个问题一般应该回答。

nevertheless, the question should be answered in general.

答

一种方法是在笔记本中使用Javascript并执行一些使代码在Python中可用的代码：

One way to do this is using Javascript within the notebook, and executing some code to make the string available in Python:

%%javascript
var kernel = Jupyter.notebook.kernel
kernel.execute('kernel_name = ' + '"' + kernel.name + '"')

然后你有Python的内核名称：

Then you have the kernel name in Python:

print(kernel_name)
# my-kernel

作为额外奖励，您可以使用 jupyter_client 模块，一旦你有了它的名字，就可以找到有关内核的更多信息：

As an added bonus, you can use the jupyter_client module to find more information about the kernel once you have its name:

from jupyter_client import kernelspec
spec = kernelspec.get_kernel_spec(kernel_name)
print(spec.resource_dir)
# /path/to/my/kernel