Sign HN: Stream-zip – Stream-assemble ZIP archives in Python

Sign HN: Stream-zip – Stream-assemble ZIP archives in Python

Python feature to assemble a ZIP archive on the fly – with out having to store the total ZIP in memory or disk. This is precious in memory-constrained environments, or whereas it is possible you’ll perchance well fancy to open returning compressed records before you have even retrieved the total uncompressed records. Producing ZIPs on-interrogate in a web based server is a conventional use case for circulation-zip.

Presents an identical performance to zipfly, but with a definite API, and does not use Python’s zipfile module beneath the hood.

To unZIP info on the fly try circulation-unzip.

Set up


from datetime import datetime
from stream_zip import stream_zip

def unzipped_files():
    modified_at =
    perms = 0o600

    def file_1_data():
        yield b'Some bytes'

    def file_2_data():
        yield b'Some bytes'

    yield 'my-file-1.txt', modified_at, perms, file_1_data()
    yield 'my-file-2.txt', modified_at, perms, file_2_data()

for zipped_chunk in stream_zip(unzipped_files()):


Or not it is miles impossible to fully circulation-write ZIP info. Diminutive bits of metadata for every member file, equivalent to its name, must be placed at the dwell of the ZIP. In repeat to retain out this, circulation-unzip buffers this metadata in memory till it goes to also be output.

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Charlie Layers

Charlie Layers

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