Anaconda中关于Qt的bug

先安装了anaconda，可以使用。
之后使用conda命令安装了Orange，由于Orange会安装Qt，可能会导致与anaconda自带的Qt冲突，然后我惊喜的发现anaconda-navigator打不开了，报出以下错误：

Traceback (most recent call last):
  File "/home/shiva/anaconda3/bin/anaconda-navigator", line 4, in <module>
    import anaconda_navigator.app.main
  File "/home/shiva/anaconda3/lib/python3.5/site-packages/anaconda_navigator/app/main.py", line 21, in <module>
    from anaconda_navigator.widgets.dialogs.splash import SplashScreen
  File "/home/shiva/anaconda3/lib/python3.5/site-packages/anaconda_navigator/widgets/__init__.py", line 18, in <module>
    from anaconda_navigator.utils.analytics import GATracker
  File "/home/shiva/anaconda3/lib/python3.5/site-packages/anaconda_navigator/utils/analytics.py", line 33, in <module>
    from qtpy.QtCore import QT_VERSION_STR, QObject, QThread, QTimer, Signal
ImportError: cannot import name 'QT_VERSION_STR'

参照了https://github.com/ContinuumIO/anaconda-issues/issues/1095的解决方法成功修复，具体方法是：
打开 /anaconda3/pkgs/anaconda-navigator-1.2.3-py35_0/lib/python3.5/site-packages/anaconda_navigator/utils/analytics.py
把

from qtpy.QtCore import QT_VERSION_STRING , QObject, QThread, QTimer, Signal

改成

from qtpy.QtCore import __version__ as qt_version , QObject, QThread, QTimer, Signal

把

self.info = {'python': python_version, 'language': self.get_language(),
             'os': operating_system, 'version': app_version,
             'platform': self.api.conda_platform(),
             'qt': QT_VERSION_STR, 'pyqt': pyqt_version,
             'conda': conda_version}

改成

self.info = {'python': python_version, 'language': self.get_language(),
             'os': operating_system, 'version': app_version,
             'platform': self.api.conda_platform(),
             'qt': qt_version, 'pyqt': pyqt_version,
             'conda': conda_version}