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How to fix 'ImportError: cannot import name QtCore' on Debian Linux

What to do if such import error occurs? >>> import PySide
>>> from PySide import QtCore
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name QtCore

1. Try to locate where your pyside is installed: $ locate PySide ... /usr/lib/python2.7/dist-packages/PySide
/usr/lib/python2.7/dist-packages/PySide/__init__.py
/usr/lib/python2.7/dist-packages/PySide/__init__.pyc
/usr/lib/python2.7/dist-packages/PySide/phonon.so
/usr/lib/python2.7/dist-packages/PySide/QtCore.so
/usr/lib/python2.7/dist-packages/PySide/QtDeclarative.so
/usr/lib/python2.7/dist-packages/PySide/QtGui.so
/usr/lib/python2.7/dist-packages/PySide/QtHelp.so ...

Hint: use this to update your file index:

$ sudo updatedb
2. The solution is easy: add this to your ~/.bashrc (or ~/.<shell>rc you actually have). export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/python2.7/dist-packages/PySide