I\'ve got:
pip install python-qt5
)
I am using PyCharm4(community Edititon) on Windows with PyQt4, the autocomplete is fine. As PyQt4 is actually a dynamic library to be dynamic loaded by the python interpreter ( you can look into the PyQt4 folder, there is no python files there except some init.py), auto-complete depends on the source code of PyQt4 itself, so when using pycharm, it usually generally some local python cache for complete. For my machine, a typically file looks like: C:\Users\cui.PyCharm40\system\python_stubs-762174762\PyQt4\QtCore\QString.py
You can also try install PyQt document from Pycharm. File->settings->Tools->python external document->PyQt