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Backport PR #12842: Reclaim sys.excepthook for interactive shell in %gui qt
Matthias Bussonnier -
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@@ -1,6 +1,7 b''
1 1 import sys
2 2 import os
3 3 from IPython.external.qt_for_kernel import QtCore, QtGui
4 from IPython import get_ipython
4 5
5 6 # If we create a QApplication, keep a reference to it so that it doesn't get
6 7 # garbage collected.
@@ -8,6 +9,12 b' _appref = None'
8 9 _already_warned = False
9 10
10 11
12 def _reclaim_excepthook():
13 shell = get_ipython()
14 if shell is not None:
15 sys.excepthook = shell.excepthook
16
17
11 18 def inputhook(context):
12 19 global _appref
13 20 app = QtCore.QCoreApplication.instance()
@@ -27,6 +34,13 b' def inputhook(context):'
27 34 return
28 35 QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
29 36 _appref = app = QtGui.QApplication([" "])
37
38 # "reclaim" IPython sys.excepthook after event loop starts
39 # without this, it defaults back to BaseIPythonApplication.excepthook
40 # and exceptions in the Qt event loop are rendered without traceback
41 # formatting and look like "bug in IPython".
42 QtCore.QTimer.singleShot(0, _reclaim_excepthook)
43
30 44 event_loop = QtCore.QEventLoop(app)
31 45
32 46 if sys.platform == 'win32':
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