运维开发网

解决Jupyter因卸载重装导致的问题修复

运维开发网 https://www.qedev.com 2020-06-14 18:30 出处:网络 作者: 堡垒-93
因为一些原因,卸载了Anaconda2的版本,转向3..发现Jupyter挂了.百思不得其解.后来了解到是因为内核找不到的问题导致的.这里整理了一下处理办法

因为一些原因,卸载了Anaconda2的版本,转向3..发现Jupyter挂了.百思不得其解.后来了解到是因为内核找不到的问题导致的.这里整理了一下处理办法

错误内容:

Traceback (most recent call last):
 File "c:\program files\python36\lib\site-packages\tornado\web.py", line 1543, in _execute
 result = yield result
 File "c:\program files\python36\lib\site-packages\tornado\gen.py", line 1099, in run
 value = future.result()
 File "c:\program files\python36\lib\site-packages\tornado\gen.py", line 1107, in run
 yielded = self.gen.throw(*exc_info)
 File "c:\program files\python36\lib\site-packages\notebook\services\sessions\handlers.py", line 73, in post
 type=mtype))
 File "c:\program files\python36\lib\site-packages\tornado\gen.py", line 1099, in run
 value = future.result()
 File "c:\program files\python36\lib\site-packages\tornado\gen.py", line 1107, in run
 yielded = self.gen.throw(*exc_info)
 File "c:\program files\python36\lib\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 "c:\program files\python36\lib\site-packages\tornado\gen.py", line 1099, in run
 value = future.result()
 File "c:\program files\python36\lib\site-packages\tornado\gen.py", line 1107, in run
 yielded = self.gen.throw(*exc_info)
 File "c:\program files\python36\lib\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 "c:\program files\python36\lib\site-packages\tornado\gen.py", line 1099, in run
 value = future.result()
 File "c:\program files\python36\lib\site-packages\tornado\gen.py", line 315, in wrapper
 yielded = next(result)
 File "c:\program files\python36\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 148, in start_kernel
 super(MappingKernelManager, self).start_kernel(**kwargs)
 File "c:\program files\python36\lib\site-packages\jupyter_client\multikernelmanager.py", line 110, in start_kernel
 km.start_kernel(**kwargs)
 File "c:\program files\python36\lib\site-packages\jupyter_client\manager.py", line 259, in start_kernel
 **kw)
 File "c:\program files\python36\lib\site-packages\jupyter_client\manager.py", line 204, in _launch_kernel
 return launch_kernel(kernel_cmd, **kw)
 File "c:\program files\python36\lib\site-packages\jupyter_client\launcher.py", line 128, in launch_kernel
 proc = Popen(cmd, **kwargs)
 File "c:\program files\python36\lib\subprocess.py", line 709, in __init__
 restore_signals, start_new_session)
 File "c:\program files\python36\lib\subprocess.py", line 997, in _execute_child
 startupinfo)
FileNotFoundError: [WinError 2] 系统找不到指定的文件。

解决办法

首先使用jupyter kernelspec list查看安装的内核和位置

2.进入安装内核目录打开kernel.jason文件,查看Python编译器的路径是否正确(其实笔者的问题就是因为路径不正确导致的),修改错误的这个配置.

3.重启jupyter notebook即可

网络上一些其他解决办法

1.首先使用jupyter kernelspec list查看安装的内核和位置

2.进入安装内核目录打开kernel.jason文件,查看Python编译器的路径是否正确

如果不正确python -m ipykernel install --user重新安装内核,如果有多个内核,如果你使用conda create -n python2 python=2,为Python2.7设置conda变量,那么在anacoda下使用activate pyhton2切换python环境,重新使用python -m ipykernel install --user安装内核

3.重启jupyter notebook即可

补充知识:关于jupyter内核(kernel)错误处理方法

首先明确起因:

卸载重装,或者之前有装过ipython,导致再次安装后,内核匹配的路径错误,没有指向新安装的位置。理论上有两种处理方法:

方法一:

手动修改路径:

1.首先使用jupyter kernelspec list查看安装的内核和位置

2.进入安装内核目录打开kernel.jason文件,查看Python编译器的路径 是否正确(其实笔者的问题就是因为路径不正确导致的),修改错误的这个配置.

3.重启jupyter notebook即可

注:理论上没有问题,但是我在实践的时候没有查找到这个文件,可能是版本问题,如果有经验的话,这个方法比较快捷。

方法二:

暴力重装:

暴力的意思就是彻底重装,之前我有试过sudo pip3,sudo -H以及一些其他方法,但是没有效果。

以下方法最后解决了我的问题:

sudo pip3 install --upgrade --force-reinstall --no-cache-dir jupyter

以上这篇解决Jupyter因卸载重装导致的问题修复就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持我们。

0

精彩评论

暂无评论...
验证码 换一张
取 消