Jupyter Notebook 损坏 Python 3.5

Question

当我将 Python 版本从 3.4 更新到 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 notebook，它立即告诉我出现了内核错误，如果我单击它，则会收到此错误消息：

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'

我知道从 3.4 升级到 3.5 意味着软件包会安装在不同的地方，但是当我已经运行 pip3 再次安装 jupyter（uninstalling/reinstalling 几次）。有人知道解决这个问题的办法吗？

Answer 1

IPython 有一个剩余的内核规范指向您的 Python 3.4。您可以通过以下方式查看现有的内核规范：

jupyter kernelspec list

您可以使用

安装新的 IPython 内核规范

ipython kernelspec install [--user]

Answer 2

我遇到了和你一样的问题。我卸载了 python 3 并重新安装了它。

然后输入：

pip3 install jupyter ipython

这使我可以访问 jupyter notebook，但仍然存在内核错误。然后我输入：

python -m ipykernel install --user

它解决了我的问题。

Jupyter Notebook 损坏 Python 3.5

Jupyter Notebook Broken by Python 3.5

python

ipython

python-3.x

ipython-notebook

jupyter