Control: tag -1 +moreinfo +unreproducible Control: severity -1 important I noticed you specified the source package and not the binary package to report the bug against. Normally not much of an issue, but it looks like you didn't use or didn't share the whole output of reportbug, because it's missing the list of installed packages, which can be rather crucial.
Note that there are 2 groups of binary packages: python-pyside2.* and python3- pyside2.* whereas the former is for python2 and the latter for python3. I didn't have any pyside2 packages installed, so I tried it with a clean slate: # aptitude install python3-pyside2.qtcore $ echo "import PySide2.QtCore as core" > test.py $ python test.py Traceback (most recent call last): File "test.py", line 1, in <module> import PySide2.QtCore as core ImportError: No module named PySide2.QtCore $ python3 test.py $ This output is exactly as expected. If I install python-pyside2.qtcore, then the Traceback output disappears. As I couldn't reproduce the issue, I set the tags accordingly and as the issue doesn't happen for everyone, I lowered the severity.
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