/usr/ is in python3-btrfs 9-1.
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/usr/share/doc/python3-btrfs/
/usr/lib/
/usr/lib/python3/
/usr/lib/python3/dist-packages/
/usr/lib/python3/dist-packages/btrfs/
/usr/lib/python3/dist-packages/btrfs/__init__.py
/usr/lib/python3/dist-packages/btrfs/crc32c.py
/usr/lib/python3/dist-packages/btrfs/ctree.py
/usr/lib/python3/dist-packages/btrfs/free_space_tree.py
/usr/lib/python3/dist-packages/btrfs/ioctl.py
/usr/lib/python3/dist-packages/btrfs/utils.py
/usr/lib/python3/dist-packages/btrfs-9.egg-info
/usr/share/
/usr/share/doc/
/usr/share/doc/python3-btrfs/README.md
/usr/share/doc/python3-btrfs/changelog.Debian.gz
/usr/share/doc/python3-btrfs/copyright
/usr/share/doc/python3-btrfs/examples/
/usr/share/doc/python3-btrfs/examples/README.txt
/usr/share/doc/python3-btrfs/examples/balance_least_used.py
/usr/share/doc/python3-btrfs/examples/block_group_search_timing.py
/usr/share/doc/python3-btrfs/examples/btrfs-fi-df-simple.py
/usr/share/doc/python3-btrfs/examples/btrfs-fi-df.py
/usr/share/doc/python3-btrfs/examples/dir_item_name_hash.py
/usr/share/doc/python3-btrfs/examples/dump_tree.py
/usr/share/doc/python3-btrfs/examples/fs_info.py
/usr/share/doc/python3-btrfs/examples/inode_extref_hash.py
/usr/share/doc/python3-btrfs/examples/set_received_uuid.py
/usr/share/doc/python3-btrfs/examples/show_block_group_contents.py
/usr/share/doc/python3-btrfs/examples/show_block_group_data_extent_filenames.py
/usr/share/doc/python3-btrfs/examples/show_block_group_free_space_extents.py
/usr/share/doc/python3-btrfs/examples/show_block_groups.py
/usr/share/doc/python3-btrfs/examples/show_chunk_tree_keys.py
/usr/share/doc/python3-btrfs/examples/show_default_subvolid.py
/usr/share/doc/python3-btrfs/examples/show_dev_extents.py
/usr/share/doc/python3-btrfs/examples/show_directory_contents.py
/usr/share/doc/python3-btrfs/examples/show_extent_tree_keys.py
/usr/share/doc/python3-btrfs/examples/show_file.py
/usr/share/doc/python3-btrfs/examples/show_file_by_inode.py
/usr/share/doc/python3-btrfs/examples/show_file_csum.py.gz
/usr/share/doc/python3-btrfs/examples/show_free_space_fragmentation.py
/usr/share/doc/python3-btrfs/examples/show_metadata_tree_sizes.py
/usr/share/doc/python3-btrfs/examples/show_orphan_cleaner_progress.py
/usr/share/doc/python3-btrfs/examples/show_orphaned_subvols.py
/usr/share/doc/python3-btrfs/examples/show_subvolumes.py
/usr/share/doc/python3-btrfs/examples/show_tree_keys.py
/usr/share/doc/python3-btrfs/examples/show_usage.py