Python Jupyter笔记本中的多内核

我目前已经安装了Python3，并希望将Python2.7作为第二个内核安装在Jupyter笔记本中。我能够安装Python 2.7，但是，当我在Jupyter笔记本中更改内核时，在Anaconda命令提示符中收到以下错误：

    [I 17:49:16.185 NotebookApp] Starting buffering for 069e4484-8d64-46e2-b62a-3588e46b4686:2857761af92f4e9387378c8162efbf40
[I 17:49:16.406 NotebookApp] Kernel shutdown: 069e4484-8d64-46e2-b62a-3588e46b4686
[I 17:49:16.453 NotebookApp] Kernel started: a9d7404d-02f1-4295-854d-0b11120cd3d2
Traceback (most recent call last):
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\__init__.py", line 2, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\connect.py", line 18, in <module>
    import jupyter_client
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\__init__.py", line 4, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\connect.py", line 24, in <module>
    import zmq
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\__init__.py", line 47, in <module>
    from zmq import backend
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 40, in <module>
    reraise(*exc_info)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 27, in <module>
    _ns = select_backend(first)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\select.py", line 28, in select_backend
    mod = __import__(name, fromlist=public_api)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in <module>
    from . import (constants, error, message, context,
ImportError: DLL load failed: The specified module could not be found.
[I 17:49:19.462 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports
Traceback (most recent call last):
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\__init__.py", line 2, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\connect.py", line 18, in <module>
    import jupyter_client
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\__init__.py", line 4, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\connect.py", line 24, in <module>
    import zmq
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\__init__.py", line 47, in <module>
    from zmq import backend
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 40, in <module>
    reraise(*exc_info)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 27, in <module>
    _ns = select_backend(first)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\select.py", line 28, in select_backend
    mod = __import__(name, fromlist=public_api)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in <module>
    from . import (constants, error, message, context,
ImportError: DLL load failed: The specified module could not be found.
[I 17:49:22.484 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports
Traceback (most recent call last):
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\__init__.py", line 2, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\connect.py", line 18, in <module>
    import jupyter_client
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\__init__.py", line 4, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\connect.py", line 24, in <module>
    import zmq
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\__init__.py", line 47, in <module>
    from zmq import backend
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 40, in <module>
    reraise(*exc_info)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 27, in <module>
    _ns = select_backend(first)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\select.py", line 28, in select_backend
    mod = __import__(name, fromlist=public_api)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in <module>
    from . import (constants, error, message, context,
ImportError: DLL load failed: The specified module could not be found.
[I 17:49:25.514 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports
Traceback (most recent call last):
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\__init__.py", line 2, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\connect.py", line 18, in <module>
    import jupyter_client
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\__init__.py", line 4, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\connect.py", line 24, in <module>
    import zmq
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\__init__.py", line 47, in <module>
    from zmq import backend
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 40, in <module>
    reraise(*exc_info)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 27, in <module>
    _ns = select_backend(first)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\select.py", line 28, in select_backend
    mod = __import__(name, fromlist=public_api)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in <module>
    from . import (constants, error, message, context,
ImportError: DLL load failed: The specified module could not be found.
[I 17:49:28.529 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports
Traceback (most recent call last):
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel_launcher.py", line 15, in <module>
    from ipykernel import kernelapp as app
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\__init__.py", line 2, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\ipykernel\connect.py", line 18, in <module>
    import jupyter_client
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\__init__.py", line 4, in <module>
    from .connect import *
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\jupyter_client\connect.py", line 24, in <module>
    import zmq
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\__init__.py", line 47, in <module>
    from zmq import backend
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 40, in <module>
    reraise(*exc_info)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\__init__.py", line 27, in <module>
    _ns = select_backend(first)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\select.py", line 28, in select_backend
    mod = __import__(name, fromlist=public_api)
  File "C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site-packages\zmq\backend\cython\__init__.py", line 6, in <module>
    from . import (constants, error, message, context,
ImportError: DLL load failed: The specified module could not be found.
[W 17:49:31.528 NotebookApp] KernelRestarter: restart failed
[W 17:49:31.528 NotebookApp] Kernel a9d7404d-02f1-4295-854d-0b11120cd3d2 died, removing from map.

[I 17:49:16.185 NotebookApp]开始缓冲069e4484-8d64-46e2-b62a-3588E46B86:2857761af92f4e9387378c8162efbf40
内核关闭：069e4484-8d64-46e2-b62a-3588e46b4686
[I 17:49:16.453 NotebookApp]内核已启动：a9d7404d-02f1-4295-854d-0b11120cd3d2
回溯（最近一次呼叫最后一次）：
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py”，第174行，位于作为主模块的运行模块中
“\uuuuu main\uuuuuuuuuuuuuuuuuuuuuuuuu”，fname，loader，pkg\u name）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py”，第72行，在运行代码中
run_globals中的exec代码
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\u launcher.py”，第15行，在
从ipykernel导入内核应用程序作为应用程序
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\\uuuuu init\uuuu.py”，第2行，在
从。连接导入*
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\connect.py”，第18行，在
导入jupyter_客户端
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\jupyter\u client\uuuuu init\uuuuu.py”，第4行，在
从。连接导入*
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\jupyter\u client\connect.py”，第24行，在
导入zmq
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\\uuuuu init\uuuu.py”，第47行，在
从zmq导入后端
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\\ uuuuu init\uuuuu.py”，第40行，在
重新发布（*exc_信息）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\\ uuuu init\uuuuu.py”，第27行，在
_ns=选择_后端（第一个）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\select.py”，第28行，在select\U backend中
mod=\uuuu导入（名称，fromlist=public\u api）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\cython\\uuuu init\uuuu.py”，第6行，在
从…起导入（常量、错误、消息、上下文、，
ImportError:DLL加载失败：找不到指定的模块。
[I 17:49:19.462 NotebookApp]内核重启器：重新启动内核（1/5），新的随机端口
回溯（最近一次呼叫最后一次）：
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py”，第174行，位于作为主模块的运行模块中
“\uuuuu main\uuuuuuuuuuuuuuuuuuuuuuuuu”，fname，loader，pkg\u name）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py”，第72行，在运行代码中
run_globals中的exec代码
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\u launcher.py”，第15行，在
从ipykernel导入内核应用程序作为应用程序
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\\uuuuu init\uuuu.py”，第2行，在
从。连接导入*
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\connect.py”，第18行，在
导入jupyter_客户端
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\jupyter\u client\uuuuu init\uuuuu.py”，第4行，在
从。连接导入*
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\jupyter\u client\connect.py”，第24行，在
导入zmq
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\\uuuuu init\uuuu.py”，第47行，在
从zmq导入后端
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\\ uuuuu init\uuuuu.py”，第40行，在
重新发布（*exc_信息）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\\ uuuu init\uuuuu.py”，第27行，在
_ns=选择_后端（第一个）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\select.py”，第28行，在select\U backend中
mod=\uuuu导入（名称，fromlist=public\u api）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\cython\\uuuu init\uuuu.py”，第6行，在
从…起导入（常量、错误、消息、上下文、，
ImportError:DLL加载失败：找不到指定的模块。
[I 17:49:22.484 NotebookApp]内核重启器：重新启动内核（2/5），新的随机端口
回溯（最近一次呼叫最后一次）：
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py”，第174行，位于作为主模块的运行模块中
“\uuuuu main\uuuuuuuuuuuuuuuuuuuuuuuuu”，fname，loader，pkg\u name）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\runpy.py”，第72行，在运行代码中
run_globals中的exec代码
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\u launcher.py”，第15行，在
从ipykernel导入内核应用程序作为应用程序
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\\uuuuu init\uuuu.py”，第2行，在
从。连接导入*
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\ipykernel\connect.py”，第18行，在
导入jupyter_客户端
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\jupyter\u client\uuuuu init\uuuuu.py”，第4行，在
从。连接导入*
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\jupyter\u client\connect.py”，第24行，在
导入zmq
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\\uuuuu init\uuuu.py”，第47行，在
从zmq导入后端
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\\ uuuuu init\uuuuu.py”，第40行，在
重新发布（*exc_信息）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\\ uuuu init\uuuuu.py”，第27行，在
_ns=选择_后端（第一个）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\select.py”，第28行，在select\U backend中
mod=\uuuu导入（名称，fromlist=public\u api）
文件“C:\Users\Nick Alexander\Anaconda3\envs\py27\lib\site packages\zmq\backend\cython\\uuuu init\uuuu.py”，第行
\path\to\your\install\of\python\python2.7 -m jupyter notebook

conda create --name py27 python=2.7

conda create --name py37 python=3.7