【发布时间】：2017-01-27 05:31:07
【问题描述】：
以下导入出现以下错误。 这似乎与熊猫进口有关。我不确定如何调试/解决这个问题。
进口：
import pandas as pd
import numpy as np
import pdb, math, pickle
import matplotlib.pyplot as plt
错误：
In [1]: %run NN.py
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
/home/abhishek/Desktop/submission/a1/new/NN.py in <module>()
2 import numpy as np
3 import pdb, math, pickle
----> 4 import matplotlib.pyplot as plt
5
6 class NN(object):
/home/abhishek/anaconda3/lib/python3.5/site-packages/matplotlib/pyplot.py in <module>()
112
113 from matplotlib.backends import pylab_setup
--> 114 _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
115
116 _IP_REGISTERED = None
/home/abhishek/anaconda3/lib/python3.5/site-packages/matplotlib/backends/__init__.py in pylab_setup()
30 # imports. 0 means only perform absolute imports.
31 backend_mod = __import__(backend_name,
---> 32 globals(),locals(),[backend_name],0)
33
34 # Things we pull in from all backends
/home/abhishek/anaconda3/lib/python3.5/site-packages/matplotlib/backends/backend_qt4agg.py in <module>()
16
17
---> 18 from .backend_qt5agg import FigureCanvasQTAggBase as _FigureCanvasQTAggBase
19
20 from .backend_agg import FigureCanvasAgg
/home/abhishek/anaconda3/lib/python3.5/site-packages/matplotlib/backends/backend_qt5agg.py in <module>()
14
15 from .backend_agg import FigureCanvasAgg
---> 16 from .backend_qt5 import QtCore
17 from .backend_qt5 import QtGui
18 from .backend_qt5 import FigureManagerQT
/home/abhishek/anaconda3/lib/python3.5/site-packages/matplotlib/backends/backend_qt5.py in <module>()
29 figureoptions = None
30
---> 31 from .qt_compat import QtCore, QtGui, QtWidgets, _getSaveFileName, __version__
32 from matplotlib.backends.qt_editor.formsubplottool import UiSubplotTool
33
/home/abhishek/anaconda3/lib/python3.5/site-packages/matplotlib/backends/qt_compat.py in <module>()
135 # have been changed in the above if block
136 if QT_API in [QT_API_PYQT, QT_API_PYQTv2]: # PyQt4 API
--> 137 from PyQt4 import QtCore, QtGui
138
139 try:
ImportError: cannot import name 'QtCore'
调试：
$ python -c "import PyQt4"
$ python -c "from PyQt4 import QtCore"
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: cannot import name 'QtCore'
$ conda list | grep qt
jupyter-qtconsole-colorschemes 0.7.1 <pip>
pyqt 5.6.0 py35_0
qt 5.6.0 0
qtawesome 0.3.3 py35_0
qtconsole 4.2.1 py35_0
qtpy 1.0.2 py35_0
我找到了其他答案，但都与 Windows 有关。 我正在使用 ubuntu 16.04 和 python 3 的 anaconda 发行版。
【问题讨论】：
-
别忘了接受@abhishek-bhatia 的回答
-
原来这是由我的启动脚本中的 ipython 魔法“%matplotlib qt”引起的，它会尝试使用 qt4。 Replacing it with "%matplotlib qt5"（或完全删除）对我有用。
-
检查
from PyQt5.QtCore import QObject是否有效。 -
你在 QObject 中添加了 's' 吗？
标签： python anaconda python-import qtcore