Bug 1792973

Summary: python-mongoquery fails to build with Python 3.9: imports abc from collections
Product: [Fedora] Fedora Reporter: Miro Hrončok <mhroncok>
Component: python-mongoqueryAssignee: Fedora QA Tools SIG <qa-tools-sig>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: cstratak, fzatlouk, mhroncok, mkrizek, qa-tools-sig, tir.karthi
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Fixed In Version: python-mongoquery-1.3.6-1.fc32 Doc Type: If docs needed, set a value
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Last Closed: 2020-02-03 18:26:50 UTC Type: Bug
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Bug Blocks: 1785415    

Description Miro Hrončok 2020-01-20 13:07:14 UTC
python-mongoquery fails to build with Python 3.9.0a2.

======================================================================
ERROR: Failure: ImportError (cannot import name 'Sequence' from 'collections' (/usr/lib64/python3.9/collections/__init__.py))
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Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/nose/failure.py", line 39, in runTest
    raise self.exc_val.with_traceback(self.tb)
  File "/usr/lib/python3.9/site-packages/nose/loader.py", line 416, in loadTestsFromName
    module = self.importer.importFromPath(
  File "/usr/lib/python3.9/site-packages/nose/importer.py", line 47, in importFromPath
    return self.importFromDir(dir_path, fqname)
  File "/usr/lib/python3.9/site-packages/nose/importer.py", line 94, in importFromDir
    mod = load_module(part_fqname, fh, filename, desc)
  File "/usr/lib64/python3.9/imp.py", line 234, in load_module
    return load_source(name, filename, file)
  File "/usr/lib64/python3.9/imp.py", line 171, in load_source
    module = _load(spec)
  File "<frozen importlib._bootstrap>", line 702, in _load
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 786, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/builddir/build/BUILD/mongoquery-1.3.5/tests/test_query.py", line 2, in <module>
    from mongoquery import Query
  File "/builddir/build/BUILD/mongoquery-1.3.5/mongoquery/__init__.py", line 7, in <module>
    from collections import Sequence, Mapping
ImportError: cannot import name 'Sequence' from 'collections' (/usr/lib64/python3.9/collections/__init__.py)
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See https://docs.python.org/3.9/whatsnew/3.9.html#removed

"The abstract base classes in collections.abc no longer are exposed in the regular collections module. This will help create a clearer distinction between the concrete classes and the abstract base classes."


For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01161767-python-mongoquery/

For all our attempts to build python-mongoquery with Python 3.9, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/package/python-mongoquery/

Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.9:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/

Let us know here if you have any questions.

Python 3.9 will be included in Fedora 33. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.9.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires), so if this package is required a lot, it's important for us to get it fixed soon.
We'd appreciate help from the people who know this package best, but if you don't want to work on this now, let us know so we can try to work around it on our side.

Comment 1 Karthikeyan Singaravelan 2020-01-22 12:33:12 UTC
Upstream issue : https://github.com/kapouille/mongoquery/issues/21

Comment 2 František Zatloukal 2020-02-03 18:26:50 UTC
Should be fixed in python-mongoquery-1.3.6-1.fc32 .