Question

当我将我的Python版本从3.4升级到3.5（在Mac El Capitan上）时，我重新安装了Jupyter但是当我运行它并创建一个新的Python 3笔记本时，它会立即告诉我存在内核错误，如果我点击这个，然后我收到此错误消息：

Traceback (most recent call last):   File
"/usr/local/lib/python3.5/site-packages/notebook/base/handlers.py",
line 436, in wrapper
    result = yield gen.maybe_future(method(self, *args, **kwargs))   File
"/usr/local/lib/python3.5/site-packages/notebook/services/sessions/handlers.py",
line 56, in post
    model = sm.create_session(path=path, kernel_name=kernel_name)   File
"/usr/local/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py",
line 66, in create_session
    kernel_name=kernel_name)   File "/usr/local/lib/python3.5/site-packages/notebook/services/kernels/kernelmanager.py",
line 84, in start_kernel
    **kwargs)   File "/usr/local/lib/python3.5/site-packages/jupyter_client/multikernelmanager.py",
line 109, in start_kernel
    km.start_kernel(**kwargs)   File "/usr/local/lib/python3.5/site-packages/jupyter_client/manager.py",
line 244, in start_kernel
    **kw)   File "/usr/local/lib/python3.5/site-packages/jupyter_client/manager.py",
line 190, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)   File "/usr/local/lib/python3.5/site-packages/jupyter_client/launcher.py",
line 123, in launch_kernel
    proc = Popen(cmd, **kwargs)   File "/usr/local/Cellar/python3/3.5.0/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py",
line 950, in __init__
    restore_signals, start_new_session)   File "/usr/local/Cellar/python3/3.5.0/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py",
line 1540, in _execute_child
    raise child_exception_type(errno_num, err_msg) FileNotFoundError: [Errno 2] No such file or directory:
'/usr/local/opt/python3/bin/python3.4'

据我所知，从3.4升级到3.5意味着软件包将安装在不同的地方，但是当我再次运行pip3 install jupyter时，我无法弄清楚它在Python 3.5软件包中的用途（并且卸载/重新安装几次）。有谁知道修复此问题？

Answer 1

IPython有一个剩余的kernelspec指向你的Python 3.4。您可以看到现有的kernelspecs：

jupyter kernelspec list

您可以使用

安装新的IPython kernelspec

ipython kernelspec install [--user]

Answer 2

我遇到了和你一样的问题。我卸载了python 3并重新安装它。

然后输入：

pip3 install jupyter ipython

这让我可以访问jupyter笔记本，但仍然存在内核错误。然后我打字：

python -m ipykernel install --user

它解决了我的问题。

由Python 3.5破坏的Jupyter笔记本

2 个答案: