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""" A Qt API selector that can be used to switch between PyQt and PySide.
This uses the ETS 4.0 selection pattern of:
PySide first, PyQt with API v2. second.
Do not use this if you need PyQt with the old QString/QVariant API.
"""
import os
from pydev_ipython.qt_loaders import (load_qt, QT_API_PYSIDE,
QT_API_PYQT, QT_API_PYQT5)
QT_API = os.environ.get('QT_API', None)
if QT_API not in [QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5, None]:
raise RuntimeError("Invalid Qt API %r, valid values are: %r, %r" %
(QT_API, QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5))
if QT_API is None:
api_opts = [QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5]
else:
api_opts = [QT_API]
QtCore, QtGui, QtSvg, QT_API = load_qt(api_opts)
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