记录一个小错误

报错如下：

[I 21:22:17.778 NotebookApp] JupyterLab extension loaded from E:\anaconda3\lib\site-packages\jupyterlab [I 21:22:17.778 NotebookApp] JupyterLab application directory is E:\anaconda3\share\jupyter\lab [I 21:22:17.780 NotebookApp] Serving notebooks from local directory: E:\Jupyter Notebook\Jupyter Notebook Project [I 21:22:17.780 NotebookApp] Jupyter Notebook 6.1.4 is running at: [I 21:22:17.780 NotebookApp] http://localhost:8888/?token=3cb9a7687c473ee862637a014fe6f55f4a295c38ef58c258 [I 21:22:17.781 NotebookApp]  or http://127.0.0.1:8888/?token=3cb9a7687c473ee862637a014fe6f55f4a295c38ef58c258 [I 21:22:17.781 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation). [C 21:22:17.867 NotebookApp]

    To access the notebook, open this file in a browser:         file:///C:/Users/FuJianping/AppData/Roaming/jupyter/runtime/nbserver-5660-open.html     Or copy and paste one of these URLs:         http://localhost:8888/?token=3cb9a7687c473ee862637a014fe6f55f4a295c38ef58c258      or http://127.0.0.1:8888/?token=3cb9a7687c473ee862637a014fe6f55f4a295c38ef58c258 [W 21:22:29.764 NotebookApp] delete /Untitled1.ipynb [I 21:22:36.824 NotebookApp] Creating new notebook in [I 21:22:37.818 NotebookApp] Kernel started: eeda6917-29fc-40d2-9349-8ced768eb766, name: tf_keras Traceback (most recent call last):   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 193, in _run_module_as_main     "__main__", mod_spec)   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 85, in _run_code     exec(code, run_globals)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel_launcher.py", line 15, in     from ipykernel import kernelapp as app   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\__init__.py", line 2, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\connect.py", line 18, in     import jupyter_client   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\__init__.py", line 4, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\connect.py", line 21, in     import zmq   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\__init__.py", line 55, in     from zmq import backend   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 40, in     reraise(*exc_info)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise     raise value   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 27, in     _ns = select_backend(first)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\select.py", line 28, in select_backend     mod = __import__(name, fromlist=public_api)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in     from . import (constants, error, message, context, ImportError: DLL load failed: 找不到指定的模块。 [I 21:22:40.821 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports Traceback (most recent call last):   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 193, in _run_module_as_main     "__main__", mod_spec)   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 85, in _run_code     exec(code, run_globals)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel_launcher.py", line 15, in     from ipykernel import kernelapp as app   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\__init__.py", line 2, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\connect.py", line 18, in     import jupyter_client   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\__init__.py", line 4, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\connect.py", line 21, in     import zmq   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\__init__.py", line 55, in     from zmq import backend   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 40, in     reraise(*exc_info)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise     raise value   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 27, in     _ns = select_backend(first)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\select.py", line 28, in select_backend     mod = __import__(name, fromlist=public_api)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in     from . import (constants, error, message, context, ImportError: DLL load failed: 找不到指定的模块。 [I 21:22:43.838 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports Traceback (most recent call last):   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 193, in _run_module_as_main     "__main__", mod_spec)   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 85, in _run_code     exec(code, run_globals)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel_launcher.py", line 15, in     from ipykernel import kernelapp as app   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\__init__.py", line 2, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\connect.py", line 18, in     import jupyter_client   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\__init__.py", line 4, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\connect.py", line 21, in     import zmq   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\__init__.py", line 55, in     from zmq import backend   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 40, in     reraise(*exc_info)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise     raise value   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 27, in     _ns = select_backend(first)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\select.py", line 28, in select_backend     mod = __import__(name, fromlist=public_api)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in     from . import (constants, error, message, context, ImportError: DLL load failed: 找不到指定的模块。 [I 21:22:46.849 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports Traceback (most recent call last):   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 193, in _run_module_as_main     "__main__", mod_spec)   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 85, in _run_code     exec(code, run_globals)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel_launcher.py", line 15, in     from ipykernel import kernelapp as app   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\__init__.py", line 2, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\connect.py", line 18, in     import jupyter_client   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\__init__.py", line 4, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\connect.py", line 21, in     import zmq   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\__init__.py", line 55, in     from zmq import backend   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 40, in     reraise(*exc_info)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise     raise value   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 27, in     _ns = select_backend(first)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\select.py", line 28, in select_backend     mod = __import__(name, fromlist=public_api)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in     from . import (constants, error, message, context, ImportError: DLL load failed: 找不到指定的模块。 [I 21:22:49.860 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports Traceback (most recent call last):   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 193, in _run_module_as_main     "__main__", mod_spec)   File "E:\anaconda3\envs\tf_keras\lib\runpy.py", line 85, in _run_code     exec(code, run_globals)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel_launcher.py", line 15, in     from ipykernel import kernelapp as app   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\__init__.py", line 2, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\ipykernel\connect.py", line 18, in     import jupyter_client   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\__init__.py", line 4, in     from .connect import *   File "E:\anaconda3\envs\tf_keras\lib\site-packages\jupyter_client\connect.py", line 21, in     import zmq   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\__init__.py", line 55, in     from zmq import backend   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 40, in     reraise(*exc_info)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise     raise value   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\__init__.py", line 27, in     _ns = select_backend(first)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\select.py", line 28, in select_backend     mod = __import__(name, fromlist=public_api)   File "E:\anaconda3\envs\tf_keras\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in     from . import (constants, error, message, context, ImportError: DLL load failed: 找不到指定的模块。 [W 21:22:52.869 NotebookApp] KernelRestarter: restart failed [W 21:22:52.869 NotebookApp] Kernel eeda6917-29fc-40d2-9349-8ced768eb766 died, removing from map. [W 21:23:37.835 NotebookApp] Timeout waiting for kernel_info reply from eeda6917-29fc-40d2-9349-8ced768eb766 [E 21:23:37.836 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: eeda6917-29fc-40d2-9349-8ced768eb766)

原因是没有在该虚拟环境中安装 jupyter

所以，解决方法就是在该虚拟环境中输入命令： conda install jupyter

然后回车

会告诉你需要安装一系列的包，y/n，输入 y 并回车即可，

安装完成后，找到电脑“开始”除点击“Anaconda"下的 ”Jupyter Notebook (你的虚拟环境的名称)“并点击即可进入你的虚拟环境中。