ImportError: PyQt4 is not installed

Question

I try to use the py_entitymatching framework to find duplicates in this dataset .

To label the data it uses PyQt4. So when I try to execute the labeling command I get an error

Though as you can see PyQt4 is installed on my machine and I can import it.

Any ideas on how to fix it?

Thanks

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Update:

When I try to import QtGui I get the following error:

>>> from PyQt4 import QtGui
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: /home/oliver/anaconda3/lib/python3.5/site-packages/PyQt4/QtCore.so: undefined symbol: __cxa_throw_bad_array_new_length

All the packages mentioned below have been installed

• Qt4
• SIP
• PyQt4
• PyQt5

Any other thoughts?

Answer 1

It looks like your PyQt package is not installed, even if the first line says that your package is installed.

Try to install it with pip and see if it does make a change

If you are using python2

sudo pip install SIP

sudo pip install PyQt

If you are using python3

sudo apt-get install python3-pyqt4

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Update

from PyQt4 import QtGui Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /home/oliver/anaconda3/lib/python3.5/site-packages/PyQt4/QtCore.so: undefined symbol: __cxa_throw_bad_array_new_length

Looking at your error, it seems your compilation did go wrong.

One possible solution would be to deinstall python , reinstall it and install PyQt again through pip

Answer 2

The same problem happened to me, you need to install the 64-bit version of pyqt4. you can install it here . Once you install it correctly I think it will work correctly.