python - 突然无法打开anaconda

Question

今天发现打不开anaconda navigator了，之前运行的很好。同时spyder也打不开，但是jupyter notebook和anaconda prompt可以打开。我按照网上的说明尝试了不同的方法。

1) conda update anaconda-navigator and reboot the system
2) anaconda-navigator --reset

，但是显示错误如下:

Traceback (most recent call last):
  File "C:\Users\User\Anaconda3\lib\site-packages\qtpy\__init__.py", line 169, in <module>
    from PySide import __version__ as PYSIDE_VERSION  # analysis:ignore
ImportError: No module named 'PySide'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\User\Anaconda3\Scripts\anaconda-navigator-script.py", line 6, in <module>
    from anaconda_navigator.app.main import main
  File "C:\Users\User\Anaconda3\lib\site-packages\anaconda_navigator\app\main.py", line 22, in <module>
    from anaconda_navigator.utils.conda import is_conda_available
  File "C:\Users\User\Anaconda3\lib\site-packages\anaconda_navigator\utils\__init__.py", line 15, in <module>
    from qtpy.QtGui import QIcon
  File "C:\Users\User\Anaconda3\lib\site-packages\qtpy\__init__.py", line 175, in <module>
    raise PythonQtError('No Qt bindings could be found')
qtpy.PythonQtError: No Qt bindings could be found

(base) C:\Users\User\Anaconda3>anaconda-navigator --reset
Traceback (most recent call last):
  File "C:\Users\User\Anaconda3\lib\site-packages\qtpy\__init__.py", line 169, in <module>
    from PySide import __version__ as PYSIDE_VERSION  # analysis:ignore
ImportError: No module named 'PySide'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\User\Anaconda3\Scripts\anaconda-navigator-script.py", line 6, in <module>
    from anaconda_navigator.app.main import main
  File "C:\Users\User\Anaconda3\lib\site-packages\anaconda_navigator\app\main.py", line 22, in <module>
    from anaconda_navigator.utils.conda import is_conda_available
  File "C:\Users\User\Anaconda3\lib\site-packages\anaconda_navigator\utils\__init__.py", line 15, in <module>
    from qtpy.QtGui import QIcon
  File "C:\Users\User\Anaconda3\lib\site-packages\qtpy\__init__.py", line 175, in <module>
    raise PythonQtError('No Qt bindings could be found')
qtpy.PythonQtError: No Qt bindings could be found

所以我尝试了不同的方法来重新安装pyqt，如下所示:

1) conda install pyqt
2) conda install --force qt 
3) pip3 install PyQt5

但还是不行。我真的很想知道如何解决这个问题。

现在当我在提示符下运行 anaconda navigator 时，我得到了

anaconda: error: argument : invalid choice: 'navigator' (choose from 'auth', 'label', 'channel', 'config', 'copy', 'download', 'groups', 'login', 'logout', 'notebook', 'package', 'remove', 'search', 'show', 'upload', 'whoami')

PS:我的python版本是3.5，anaconda已经更新到最新版本了。

PS2-可能的解决方案:我在提示符下运行了 conda install PySide 并且它降级了一些包，我记得几天前我升级了 beautifulsou4，在 anaconda 上升级包时请非常小心!

Answer 1

此错误意味着您在 pyqt conda 包旁边安装了带有 pip 的 pyqt5。可以通过卸载 pip 包来解决。尝试:

pip uninstall PyQt5

然后更新conda:

conda update conda

和

conda update anaconda-navigator

一定能解决您的问题。