For me, this happened when installing `pypy3` on hirsute.
running pypy3 rtupdate hooks for 7.3
Failed to byte-compile
/usr/lib/python3/dist-packages/softwareproperties/extendedsourceslist.py:
File "/
usr/lib/python3/dist-packages/softwareproperties/extendedsourceslist.py", line
436
def __init__(self, sourceslist=None, /, files=None):
^
SyntaxError: invalid syntax (expected ')')
The problem seems to be that `python3-software-properties` expects
Python>=3.8 (the `/` syntax only became available then, see
https://www.python.org/dev/peps/pep-0570/). However, pypy3 as packaged
with hirsute (7.3.5) only supports Python 3.7. Upgrading to pypy 7.3.6
(https://www.pypy.org/posts/2021/10/pypy-v736-release.html), announced
as supporting Python 3.8, probably would solve this problem.
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https://bugs.launchpad.net/bugs/1921515
Title:
`SyntaxError` when byte-compiling during `do-release-upgrade` to
hirsute
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