/usr/lib/python3/dist-packages/pyqtgraph/Qt.py is in python3-pyqtgraph 0.9.8-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | ## Do all Qt imports from here to allow easier PyQt / PySide compatibility
import sys, re
## Automatically determine whether to use PyQt or PySide.
## This is done by first checking to see whether one of the libraries
## is already imported. If not, then attempt to import PyQt4, then PySide.
if 'PyQt4' in sys.modules:
USE_PYSIDE = False
elif 'PySide' in sys.modules:
USE_PYSIDE = True
else:
try:
import PyQt4
USE_PYSIDE = False
except ImportError:
try:
import PySide
USE_PYSIDE = True
except ImportError:
raise Exception("PyQtGraph requires either PyQt4 or PySide; neither package could be imported.")
if USE_PYSIDE:
from PySide import QtGui, QtCore, QtOpenGL, QtSvg
import PySide
VERSION_INFO = 'PySide ' + PySide.__version__
else:
from PyQt4 import QtGui, QtCore
try:
from PyQt4 import QtSvg
except ImportError:
pass
try:
from PyQt4 import QtOpenGL
except ImportError:
pass
QtCore.Signal = QtCore.pyqtSignal
VERSION_INFO = 'PyQt4 ' + QtCore.PYQT_VERSION_STR + ' Qt ' + QtCore.QT_VERSION_STR
## Make sure we have Qt >= 4.7
versionReq = [4, 7]
QtVersion = PySide.QtCore.__version__ if USE_PYSIDE else QtCore.QT_VERSION_STR
m = re.match(r'(\d+)\.(\d+).*', QtVersion)
if m is not None and list(map(int, m.groups())) < versionReq:
print(map(int, m.groups()))
raise Exception('pyqtgraph requires Qt version >= %d.%d (your version is %s)' % (versionReq[0], versionReq[1], QtVersion))
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