TypeError: isdeleted() argument 1 must be sip.simplewrapper, not PlotWidget

[deanhystad]

The PyQtGraph examples in the documentation look nothing like the posted code. For example:

from PyQt5 import QtGui  # (the example applies equally well to PySide2)
import pyqtgraph as pg

## Always start by initializing Qt (only once per application)
app = QtGui.QApplication([])

Important things like QApplication come from PyQt5 or PySideX, not from pyqtgraph.

And what does "pg.mkQApp()" do? I can't find this call anywhere in the API.