Fix error on pyplot initialisation in IPython

Martin Fitzpatrick · Martin Fitzpatrick · commit 3779fab61ea0 · 2014-06-23T19:41:17.000+01:00
There was a bug on the pyplot initialisation that was wrongly looking for qApp in PyQt5.QtGui rather than PyQt5.QtWidgets. I've updated the init to do this correctly, which hopefully fixes the bug reported by @tacaswell
diff --git a/lib/matplotlib/pyplot.py b/lib/matplotlib/pyplot.py
@@ -87,8 +87,8 @@ def _backend_selection():
             # The mainloop is running.
             rcParams['backend'] = 'qt4Agg'
     elif 'PyQt5.QtCore' in sys.modules and not backend == 'Qt5Agg':
-        import PyQt5.QtGui
-        if not PyQt5.QtGui.qApp.startingUp():
+        import PyQt5.QtWidgets
+        if not PyQt5.QtWidgets.qApp.startingUp():
             # The mainloop is running.
             rcParams['backend'] = 'qt5Agg'
     elif 'gtk' in sys.modules and not backend in ('GTK', 'GTKAgg',
