Question

我最近下载了PyQtGraph并使用的是Python 2.7。我试图从documentation：

运行简单示例

import pyqtgraph.examples
pyqtgraph.examples.run()

但是，当我尝试在iPython或脚本中导入包时，我会遇到以下错误：

Exception: PyQtGraph requires one of PyQt4, PyQt5 or PySide; none of these packages could be imported.

我已经通过Homebrew安装了PyQt5（因为它不能用PySide或PyQt4这样做）但我仍然得到同样的错误。当我尝试导入任何这些软件包时，我收到类似的错误，告诉我它们无法导入。当我尝试导入PyQtGraph时，这是我的追溯：

    In [1]: import pyqtgraph as pg
-----------------------------------------------------------
Exception                 Traceback (most recent call last)
<ipython-input-1-e5a51b506085> in <module>()
----> 1 import pyqtgraph as pg

/usr/local/lib/python2.7/site-packages/pyqtgraph/__init__.py in <module>()
     11 ## 'Qt' is a local module; it is intended mainly to cover up the differences
     12 ## between PyQt4 and PySide.
---> 13 from .Qt import QtGui
     14
     15 ## not really safe--If we accidentally create another QApplication, the process hangs (and it is very difficult to trace the cause)

/usr/local/lib/python2.7/site-packages/pyqtgraph/Qt.py in <module>()
     42
     43 if QT_LIB is None:
---> 44     raise Exception("PyQtGraph requires one of PyQt4, PyQt5 or PySide; none of these packages could be imported.")
     45
     46 if QT_LIB == PYSIDE:

Exception: PyQtGraph requires one of PyQt4, PyQt5 or PySide; none of these packages could be imported.

当我尝试导入任何PySide，PyQt4或PyQt5包时：

In [7]: import PyQt4
-----------------------------------------------------------
ImportError               Traceback (most recent call last)
<ipython-input-7-0c3b8c686717> in <module>()
----> 1 import PyQt4

ImportError: No module named PyQt4

无法导入PyQtGraph，因为无法导入包PySide，PyQt4或PyQt5？

0 个答案: