在Ubuntu 14.04上将qtopengl导入到Python 3

Question

这与this question相关，但适用于Python3而不是2.x

我正在尝试在Python 3.4 (Ubuntu 14.04)下运行pyqtgraph示例程序。当我尝试运行曲面绘制示例时，我得到：

tim@MERLIN:/usr/local/lib$ python3 -m pyqtgraph.examples
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/pyqtgraph-0.9.8-py3.4.egg/pyqtgraph/examples/GLSurfacePlot.py", line 12, in <module>
    import pyqtgraph.opengl as gl
  File "/usr/local/lib/python3.4/dist-packages/pyqtgraph-0.9.8-py3.4.egg/pyqtgraph/opengl/__init__.py", line 1, in <module>
    from .GLViewWidget import GLViewWidget
  File "/usr/local/lib/python3.4/dist-packages/pyqtgraph-0.9.8-py3.4.egg/pyqtgraph/opengl/GLViewWidget.py", line 1, in <module>
    from pyqtgraph.Qt import QtCore, QtGui, QtOpenGL
ImportError: cannot import name 'QtOpenGL'

有谁能建议在Python3上安装它的最好方法是什么(它在Python2.7下工作得很好)？

Answer 1

我刚刚发现pyqtgraph在某些情况下不能正确地导入python qt库。尝试在代码的开头添加：

import PySide

或

import PyQt5

甚至

import PyQt4

这取决于默认情况下要使用的库。