在 Jupyter Notebook 中运行 Python 3 但出现内核错误答案

【问题标题】：Running Python 3 in Jupyter Notebook but getting kernel error在 Jupyter Notebook 中运行 Python 3 但出现内核错误
【发布时间】：2020-05-19 19:20:50
【问题描述】：

这是我点击内核错误时得到的错误日志：

Traceback (most recent call last):
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/tornado/web.py", line 1699, in 
_execute result = await result
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info)  # type: ignore
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site- 
packages/notebook/services/sessions/handlers.py", line 72, in post type=mtype))
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info)  # type: ignore
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site 
packages/notebook/services/sessions/sessionmanager.py", line 88, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/tornado/gen.py", line 742, in run
yielded = self.gen.throw(*exc_info)  # type: ignore
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site- 
packages/notebook/services/sessions/sessionmanager.py", line 101, in start_kernel_for_session 
self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/tornado/gen.py", line 735, in run
value = future.result()
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/tornado/gen.py", line 209, in wrapper
yielded = next(result)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site- 
packages/notebook/services/kernels/kernelmanager.py", line 168, in start_kernel 
super(MappingKernelManager, self).start_kernel(**kwargs)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site- 
packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
km.start_kernel(**kwargs)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/jupyter_client/manager.py", line 
259, in start_kernel**kw)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/jupyter_client/manager.py", line 204, 
in _launch_kernel return launch_kernel(kernel_cmd, **kw)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/site-packages/jupyter_client/launcher.py", line 
138, in launch_kernel proc = Popen(cmd, **kwargs)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/subprocess.py", line 800, in __init__
restore_signals, start_new_session)
File "/Users/Brahmbha/opt/anaconda3/lib/python3.7/subprocess.py", line 1551, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory:

'/Users/Brahmbha/anaconda2/envs/ipykernel_py3/bin/python': '/Users/Brahmbha/anaconda2/envs/ipykernel_py3/bin/python'

【问题讨论】：

标签： python-3.x jupyter-notebook anaconda

【解决方案1】：

您的 jupyter notebook 似乎正在尝试使用已被移动或删除的 python 环境。

在 cmd 或 anaconda 中试试这个：

python -m ipykernel install --user

查看这个帖子了解更多： https://github.com/jupyter/notebook/issues/4079

【讨论】：