我有通过 Homebrew 安装的 python 版本
3.6.5_13.7.0jupyter3.63.7启动后，无法启动内核。出现此错误：
Traceback (most recent call last):
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/web.py", line 1543, in _execute
result = yield result
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/gen.py", line 1099, in run
value = future.result()
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/gen.py", line 1107, in run
yielded = self.gen.throw(*exc_info)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/lib/python3.6/site-packages/notebook/services/sessions/handlers.py", line 73, in post
type=mtype))
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/gen.py", line 1099, in run
value = future.result()
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/gen.py", line 1107, in run
yielded = self.gen.throw(*exc_info)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/lib/python3.6/site-packages/notebook/services/sessions/sessionmanager.py", line 79, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/gen.py", line 1099, in run
value = future.result()
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/gen.py", line 1107, in run
yielded = self.gen.throw(*exc_info)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/lib/python3.6/site-packages/notebook/services/sessions/sessionmanager.py", line 92, in start_kernel_for_session
self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/gen.py", line 1099, in run
value = future.result()
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/vendor/lib/python3.6/site-packages/tornado/gen.py", line 315, in wrapper
yielded = next(result)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/lib/python3.6/site-packages/notebook/services/kernels/kernelmanager.py", line 148, in start_kernel
super(MappingKernelManager, self).start_kernel(**kwargs)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/lib/python3.6/site-packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
km.start_kernel(**kwargs)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/lib/python3.6/site-packages/jupyter_client/manager.py", line 259, in start_kernel
**kw)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/lib/python3.6/site-packages/jupyter_client/manager.py", line 204, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File "/usr/local/Cellar/jupyter/1.0.0_4/libexec/lib/python3.6/site-packages/jupyter_client/launcher.py", line 128, in launch_kernel
proc = Popen(cmd, **kwargs)
File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 709, in __init__
restore_signals, start_new_session)
File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1344, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/opt/python/bin/python3.7': '/usr/local/opt/python/bin/python3.7'
据我了解，内核正在寻找python
3.7$jupyter kernelspec list
Available kernels:
python3 /usr/local/etc/jupyter/kernels/python3
我查看了github上的这个链接，但没有帮助。如何让jupyter和内核运行在同一个python版本上？
检查内核规格：
$jupyter kernelspec list
这将向您显示可用的内核。在这种情况下：
python3 /usr/local/etc/jupyter/kernels/python3
打开此目录中的
kernel.jsonargv更新 jupyter 笔记本解决了我的问题。 但请记住，使用命令行更新它。不是 Anaconda Navigator
pip install -U jupyter
万一阅读本文的人在 Anaconda 中运行 Jupyter Notebook 并收到相同的错误：
我通过在命令提示符（不是 anaconda 提示符）中使用 pip 安装 Jupyter 找到了解决方法：
$pip install jupyter
然后使用已知的方式启动Jupyter
$cd 'DirectoryofyourNotebook'
$jupyter notebook
第2步命令：
conda activate <location of your env folder>
第3步命令：
python -m ipykernel install --user
有效！
我遇到了同样的问题 - 尝试了以上所有方法但没有成功。
背景：在那台机器上使用 Windows 几年了。我已将这台机器用作“需要时随时编写代码”的笔记本电脑，并且在安装/升级 python 版本或库或环境时并没有非常小心或一致。
对我来说的修复 - 不知何故，包含 f2py.exe（Numpy - 在其上构建 Pandas）的文件夹不在路径中并且位于以“\Scripts”结尾的隐藏文件夹中。 Python 本身在环境变量方面没问题。它们位于非常不同的文件夹中 - 虽然通常它们应该位于文件夹树中的紧密分支中。添加环境变量中包含 f2py.exe 的以“\Scripts”结尾的文件夹的完整路径解决了我的内核问题。