import shiboken{2,6} as shiboken

examples/PlotSpeedTest.py

@@ -17,12 +17,10 @@ import pyqtgraph.functions as fn
 import itertools
 import argparse
 
-if QT_LIB == 'PySide2':
-    wrapinstance = pg.Qt.shiboken2.wrapInstance
-elif QT_LIB == 'PySide6':
-    wrapinstance = pg.Qt.shiboken6.wrapInstance
-elif QT_LIB in ['PyQt5', 'PyQt6']:
+if QT_LIB.startswith('PyQt'):
     wrapinstance = pg.Qt.sip.wrapinstance
+else:
+    wrapinstance = pg.Qt.shiboken.wrapInstance
 
 # defaults here result in the same configuration as the original PlotSpeedTest
 parser = argparse.ArgumentParser()

pyqtgraph/Qt/__init__.py

@@ -152,7 +152,12 @@ if QT_LIB == PYQT5:
     _copy_attrs(PyQt5.QtGui, QtGui)
     _copy_attrs(PyQt5.QtWidgets, QtWidgets)
 
-    from PyQt5 import sip, uic
+    try:
+        from PyQt5 import sip
+    except ImportError:
+        # some Linux distros package it this way (e.g. Ubuntu)
+        import sip
+    from PyQt5 import uic
 
     try:
         from PyQt5 import QtSvg
@@ -203,8 +208,7 @@ elif QT_LIB == PYSIDE2:
     except ImportError as err:
         QtTest = FailedImport(err)
 
-    import shiboken2
-    isQObjectAlive = shiboken2.isValid
+    import shiboken2 as shiboken
     import PySide2
     VERSION_INFO = 'PySide2 ' + PySide2.__version__ + ' Qt ' + QtCore.__version__
 elif QT_LIB == PYSIDE6:
@@ -226,8 +230,7 @@ elif QT_LIB == PYSIDE6:
     except ImportError as err:
         QtTest = FailedImport(err)
 
-    import shiboken6
-    isQObjectAlive = shiboken6.isValid
+    import shiboken6 as shiboken
     import PySide6
     VERSION_INFO = 'PySide6 ' + PySide6.__version__ + ' Qt ' + QtCore.__version__
 
@@ -313,6 +316,7 @@ if QT_LIB in [PYQT6, PYSIDE6]:
 if QT_LIB in [PYSIDE2, PYSIDE6]:
     QtVersion = QtCore.__version__
     loadUiType = _loadUiType
+    isQObjectAlive = shiboken.isValid
 
     # PySide does not implement qWait
     if not isinstance(QtTest, FailedImport):

pyqtgraph/graphicsItems/ScatterPlotItem.py

@@ -4,6 +4,7 @@ import itertools
 import math
 import numpy as np
 import weakref
+from .. import Qt
 from ..Qt import QtGui, QtCore, QT_LIB
 from ..Point import Point
 from .. import functions as fn
@@ -13,13 +14,6 @@ from .. import getConfigOption
 from collections import OrderedDict
 from .. import debug
 
-if QT_LIB == 'PySide2':
-    from shiboken2 import wrapInstance
-elif QT_LIB == 'PySide6':
-    from shiboken6 import wrapInstance
-elif QT_LIB in ['PyQt5', 'PyQt6']:
-    from ..Qt import sip
-
 __all__ = ['ScatterPlotItem', 'SpotItem']
 
 
@@ -167,11 +161,11 @@ class PixmapFragments:
         #    instances into a contiguous array, in order to call the underlying C++ native API.
         self.arr = np.empty((size, 10), dtype=np.float64)
         if QT_LIB.startswith('PyQt'):
-            self.ptrs = list(map(sip.wrapinstance,
+            self.ptrs = list(map(Qt.sip.wrapinstance,
                 itertools.count(self.arr.ctypes.data, self.arr.strides[0]),
                 itertools.repeat(QtGui.QPainter.PixmapFragment, self.arr.shape[0])))
         else:
-            self.ptrs = wrapInstance(self.arr.ctypes.data, QtGui.QPainter.PixmapFragment)
+            self.ptrs = Qt.shiboken.wrapInstance(self.arr.ctypes.data, QtGui.QPainter.PixmapFragment)
 
     def array(self, size):
         if size > self.arr.shape[0]: