Несколько ядер в ноутбуке Python Jupyter

Question

В настоящее время у меня установлен Python 3 и я хочу установить Python 2.7 в качестве второго ядра в ноутбуке Jupyter. Мне удалось установить Python 2.7, однако, когда я меняю ядра в записной книжке Jupyter, в командной строке Anaconda появляется следующая ошибка:

    [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.

Все установочные файлы python 2.7, похоже, находятся в путиуказывается в сообщении об ошибке. Спасибо!

Answer 1

У вас установлена ​​Anaconda?

С Anaconda вы можете легко создать новую виртуальную среду с нужной версией Python:

conda create --name py27 python=2.7

создаст новую среду с Python версии 2.7.

conda create --name py37 python=3.7

создаст новую среду с Python версии 3.7.

Это лучший способ использовать несколько выпусков Python на одной машине - на мой взгляд - более того, вам не нужноЧтобы установить любую версию Python на ваш компьютер, Anaconda сделает это за вас.

Answer 2

Я не уверен, что это решит вашу проблему, но попробуйте запустить

\path\to\your\install\of\python\python2.7 -m jupyter notebook

Это откроет jupyter в python2.7, мы надеемся