这篇文章主要讲解了Jupyter因卸载重装导致的问题修复方案，内容清晰明了，对此有兴趣的小伙伴可以学习一下，相信大家阅读完之后会有帮助。

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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。

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