Cannot import QtSql

[panoss]

My program has on line only:

from PyQt4 import QtSql

And in pyCharm it gets underlined with a red line, 'Unresolve reference'

If I make other imports from PyQt4 (e.g: from PyQt4 import QtCore or from PyQt4 import QtGui) they work ok.

What am I doing wrong?

(Python 3.4 on WinXP)