PyQt4 Reference Guide ===================== .. toctree:: :maxdepth: 2 introduction incompatibilities installation python_v3 qt_v5 keyword_arguments qt_properties new_style_signals_slots old_style_signals_slots gotchas designer resources pyqt_qvariant pyqt_qsettings qml webkit pickle buffer_interface python_shell i18n dbus incompatible_apis deploy_commercial build_system