PySide2 and Python3.9: xml.etree.ElementTree.Element' object has no attribute 'getchildren

[AndrewAmmerlaan]

With QT_API="pyside2", QtPy-1.9.0 and python3.9, I get the following test failure:

=============================================================================================== FAILURES ================================================================================================
_______________________________________________________________________________________ test_load_ui_custom_auto ________________________________________________________________________________________

tmpdir = local('/var/tmp/portage/dev-python/QtPy-1.9.0-r4/temp/pytest-of-portage/pytest-5/test_load_ui_custom_auto0')

@pytest.mark.skipif((PYSIDE2 and os.environ.get('CI', None) is not None),
reason="It segfaults in our CIs with PYSIDE2")
def test_load_ui_custom_auto(tmpdir):
"""
Test that we can load a .ui file with custom widgets without having to
explicitly specify a dictionary of custom widgets, even in the case of
PySide.
"""

app = get_qapp()

with enabled_qcombobox_subclass(tmpdir):
from qcombobox_subclass import _QComboBoxSubclass
>           ui = loadUi(os.path.join(os.path.dirname(__file__), 'test_custom.ui'))

_QComboBoxSubclass = <class 'qcombobox_subclass._QComboBoxSubclass'>
app        = <PySide2.QtWidgets.QApplication(0x559c6cc2d810) at 0x7f2e425790c0>
tmpdir     = local('/var/tmp/portage/dev-python/QtPy-1.9.0-r4/temp/pytest-of-portage/pytest-5/test_load_ui_custom_auto0')

qtpy/tests/test_uic.py:71: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
qtpy/uic.py:219: in loadUi
customWidgets = _get_custom_widgets(uifile)
baseinstance = None
uifile     = '/var/tmp/portage/dev-python/QtPy-1.9.0-r4/work/QtPy-1.9.0/qtpy/tests/test_custom.ui'
workingDirectory = None
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ui_file = '/var/tmp/portage/dev-python/QtPy-1.9.0-r4/work/QtPy-1.9.0/qtpy/tests/test_custom.ui'

def _get_custom_widgets(ui_file):
"""
This function is used to parse a ui file and look for the <customwidgets>
section, then automatically load all the custom widget classes.
"""

import sys
import importlib
from xml.etree.ElementTree import ElementTree

# Parse the UI file
etree = ElementTree()
ui = etree.parse(ui_file)

# Get the customwidgets section
custom_widgets = ui.find('customwidgets')

if custom_widgets is None:
return {}

custom_widget_classes = {}

>       for custom_widget in custom_widgets.getchildren():
E       AttributeError: 'xml.etree.ElementTree.Element' object has no attribute 'getchildren'

ElementTree = <class 'xml.etree.ElementTree.ElementTree'>
custom_widget_classes = {}
custom_widgets = <Element 'customwidgets' at 0x7f2de8996220>
etree      = <xml.etree.ElementTree.ElementTree object at 0x7f2e425603d0>
importlib  = <module 'importlib' from '/usr/lib/python3.9/importlib/__init__.py'>
sys        = <module 'sys' (built-in)>
ui         = <Element 'ui' at 0x7f2de898cae0>
ui_file    = '/var/tmp/portage/dev-python/QtPy-1.9.0-r4/work/QtPy-1.9.0/qtpy/tests/test_custom.ui'

qtpy/uic.py:184: AttributeError

Please let me know if you require any additional information.