all Python 3gzipterm

gzip

module

Reading and writing .gz files and compressing bytes in memory in the same format as the gzip and gunzip tools.

Syntax

import gzip

Use gzip for a single compressed stream: logs, data dumps, HTTP responses. An archive of many files is zipfile or tarfile, and a raw stream without the gzip header is zlib. gzip.open() opens in binary mode by default and returns bytes; for text use mode 'rt' or 'wt' and an encoding.

Examples

import gzip
data = b'abc' * 1000
print(len(gzip.compress(data)) < len(data))  # → True
with gzip.open('log.txt.gz', 'wt', encoding='utf-8') as f:
    f.write('привет\n')
with gzip.open('log.txt.gz', 'rt', encoding='utf-8') as f:
    print(f.read().strip())  # → привет

See also

Common errors

Open in the full glossarydocs.python.orgReport an inaccuracy