sozipfile is a fork of Python zipfile module, from its implementation in CPython 3.11, which implements the SOZip optimization, when writing deflate compressed files whose size exceeds the chunk size (defaults to 32768 bytes). It also implements efficient seeking within a SOZip file.
Example to generate a SOZip-optimized file:
import sozipfile.sozipfile as zipfile
with zipfile.ZipFile('my.zip', 'w',
compression=zipfile.ZIP_DEFLATED,
chunk_size=zipfile.SOZIP_DEFAULT_CHUNK_SIZE) as myzip:
myzip.write('my.file')
Example to check if a file within a ZIP is SOZip-optimized:
import sozipfile.sozipfile as zipfile
with zipfile.ZipFile('my.zip', 'r') as myzip:
if myzip.getinfo('my.gpkg').is_sozip_optimized(myzip):
print('SOZip optimized!')
Available on pypi:
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