root@ubuntu-noble:~/test# cat - >test.py <<EOD
import apt

print(apt.apt_pkg.version_compare("1.2.3", "1.2.4"))
print(apt.apt_pkg.version_compare("1.2.4", "1.2.3"))
EOD
root@ubuntu-noble:~/test# python3 test.py
-1
1
root@ubuntu-noble:~/test# ty check test.py
WARN ty is pre-release software and not ready for production use. Expect to encounter bugs, missing features, and fatal errors.
Checking ------------------------------------------------------------ 1/1 fileserror[unresolved-import]: Cannot resolve imported module `apt`
 --> test.py:1:8
  |
1 | import apt
  |        ^^^
2 |
3 | print(apt.apt_pkg.version_compare("1.2.3", "1.2.4"))
  |
info: Searched in the following paths during module resolution:
info:   1. /root/test (first-party code)
info:   2. vendored://stdlib (stdlib typeshed stubs vendored by ty)
info: make sure your Python environment is properly configured: https://docs.astral.sh/ty/modules/#python-environment
info: rule `unresolved-import` is enabled by default

Found 1 diagnostic
root@ubuntu-noble:~/test#