This bug was fixed in the package python-apt - 1.6.2
---------------
python-apt (1.6.2) unstable; urgency=medium
* Introduce gitlab ci
* Document whatsnew in 1.6.y
* Add more extensive test cases for cache remapping
* Do not override __hash__ in apt.package.Package (LP: #1780099)
* debian/python-apt.docs: README is README.md since some time
* debian/control: Point to salsa instead of anonscm
-- Julian Andres Klode <juli...@ubuntu.com> Mon, 09 Jul 2018 15:37:51
+0200
** Changed in: python-apt (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1780099
Title:
Cache remapping breaks hashing of Package objects
Status in python-apt package in Ubuntu:
Fix Committed
Status in python-apt source package in Bionic:
Fix Released
Bug description:
[Impact]
The apt.Package objects use the id as the hash, but the hash can change after
reopening, meaning that code will fail to work, for example:
c=apt.Cache()
p=c["a"]
set_of_p={p}
c.open()
assert p in set_of_p
will fail.
[Test case]
The above test case is run as part of autopkgtest (syntax is slightly
different), so passing autopkgtests means verification is done.
[Regression potential]
Hashing packages objects will be slower as it hashes the name and
architecture now.
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