/usr/lib/python3/dist-packages/pybtex/style/ is in python3-pybtex 0.21-2.
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/usr/lib/python3/dist-packages/pybtex/style/__init__.py
/usr/lib/python3/dist-packages/pybtex/style/formatting/
/usr/lib/python3/dist-packages/pybtex/style/formatting/__init__.py
/usr/lib/python3/dist-packages/pybtex/style/formatting/alpha.py
/usr/lib/python3/dist-packages/pybtex/style/formatting/plain.py
/usr/lib/python3/dist-packages/pybtex/style/formatting/unsrt.py
/usr/lib/python3/dist-packages/pybtex/style/formatting/unsrtalpha.py
/usr/lib/python3/dist-packages/pybtex/style/labels/
/usr/lib/python3/dist-packages/pybtex/style/labels/__init__.py
/usr/lib/python3/dist-packages/pybtex/style/labels/alpha.py
/usr/lib/python3/dist-packages/pybtex/style/labels/number.py
/usr/lib/python3/dist-packages/pybtex/style/names/
/usr/lib/python3/dist-packages/pybtex/style/names/__init__.py
/usr/lib/python3/dist-packages/pybtex/style/names/lastfirst.py
/usr/lib/python3/dist-packages/pybtex/style/names/plain.py
/usr/lib/python3/dist-packages/pybtex/style/sorting/
/usr/lib/python3/dist-packages/pybtex/style/sorting/__init__.py
/usr/lib/python3/dist-packages/pybtex/style/sorting/author_year_title.py
/usr/lib/python3/dist-packages/pybtex/style/sorting/none.py
/usr/lib/python3/dist-packages/pybtex/style/template.py