[PyQt] help installing pyqt5.1 and using with pycharm3

[alan]

I have downloaded python 3.3.2 and built into /opt/python3.3.2 folder. 
Then downloaded sip and built into the /opt/python3.3.2 the downloaded 
pyqt5.1 and again configured, made and installed into the 
/opt/python3.3.2 folder. In that there is a Qt5 folder in 
/opt/python3.3.2/lib/python3.3/site-packages.

I use pycharm3, when I point its project compiler to the one above 
pycharm finds the PyQt5 package, its creates skeletons (whatever they 
are ) and shows PyQt5 in its external Libraries and shows Qt.so, 
QtCore.so QtDBus.so QtNetwork.so QtXmlPatterns.

If a python file I write from PyQt5.QtWidgets import QmainWindow, 
pycharm3 is reporting that it cannot find a reference to QTWidgets in 
__init__.py which when inspected contains the python for compileUIDir etc.

So could someone please tell me what is missing or what I have done wrong.
Thanks

Alan

ps I installed 5.1 in windows earlier today no problems however there 
are many more dlls reported by pycharm in windows in its site-packages. 
I am using the same simple program on both to test. I had previously 
installed version 5.0.1 on both linux and windows and both worked fine. 
I had to get a new pc and so decided to install the 5.1 versions hence 
my question. I have forgotten what I did to install 5.0.1 so must be 
missing something but what?