没有运行python 3的Jupyter笔记本

Question

我无法使用Python 3打开jupyter笔记本。我安装了Anaconda for Python 2和Anaconda for Python 3（对于Windows都是64位）。 如果我为Python 2运行jupyter笔记本，一切正常，但是使用Python 3它不起作用。 我已经重新安装了Anaconda 3（4.2版本= Python 3.5），但这没有帮助。 我也尝试了所有的谷歌搜索结果。 当我从anacoda提示符运行jupyter笔记本时，我仍然会收到以下错误。 任何帮助都非常感谢。

(C:\Users\Myamoto\Anaconda3) C:\Users\Myamoto>jupyter notebook
_cffi_ext.c
AppData\Roaming\Python\Python35\site-packages\zmq\backend\cffi\__pycache__\_cffi_ext.c(209): fatal error C1083: Cannot open include file: 'sys/un.h': No such file or directory
Traceback (most recent call last):
  File "C:\Users\Myamoto\Anaconda3\Scripts\jupyter-notebook-script.py", line 3, in <module>
    import notebook.notebookapp
  File "C:\Users\Myamoto\Anaconda3\lib\site-packages\notebook\notebookapp.py", line 31, in <module>
    from zmq.eventloop import ioloop
  File "C:\Users\Myamoto\AppData\Roaming\Python\Python35\site-packages\zmq\__init__.py", line 34, in <module>
    from zmq import backend
  File "C:\Users\Myamoto\AppData\Roaming\Python\Python35\site-packages\zmq\backend\__init__.py", line 40, in <module>
    reraise(*exc_info)
  File "C:\Users\Myamoto\AppData\Roaming\Python\Python35\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise
    raise value
  File "C:\Users\Myamoto\AppData\Roaming\Python\Python35\site-packages\zmq\backend\__init__.py", line 27, in <module>
    _ns = select_backend(first)
  File "C:\Users\Myamoto\AppData\Roaming\Python\Python35\site-packages\zmq\backend\select.py", line 26, in select_backend
    mod = __import__(name, fromlist=public_api)
  File "C:\Users\Myamoto\AppData\Roaming\Python\Python35\site-packages\zmq\backend\cython\__init__.py", line 6, in <module>
    from . import (constants, error, message, context,
ImportError: cannot import name 'constants'

Answer 1

    pip uninstall pyzmq 

在那之后

    pip install pyzmq.

感谢Muten_Roshi。 这种方法效果很好。

Answer 2

问题出在pyzmq上，但正在运行：

pip uninstall pyzmq 

可能以错误结束Cannot uninstall 'pyzmq'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall. Cannot uninstall 'pyzmq'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

如果您正在使用Anaconda，这样的命令链可能有所帮助（它实际上解决了我的问题）：

conda uninstall pyzmq 
conda install pyzmq 
conda install jupyter

Answer 3

我找到了一个适合我的解决方案。 在python3中重新安装pyzmq

如果你们中的任何人有同样的问题，我希望有助于解决它。

Answer 4

我遇到了与spyder类似的问题。 我卸载了所有创建问题的软件包，我也卸载了spyder。

Conda remove packages
conda install packages 

它又开始工作了。