Serhiy Storchaka added the comment:
Some examples:
>>> import zipfile
>>> z = zipfile.ZipFile('README.zip')
>>> z.filelist[0].extra
b'UT\x05\x00\x03\xe0\xc3\x87Rux\x0b\x00\x01\x04\xe8\x03\x00\x00\x04\xe8\x03\x00\x00'
>>> z.filelist[0].extra_map
<zipfile.ExtraMap object at 0xb6fe8bec>
>>> list(z.filelist[0].extra_map.items())
[(21589, b'\x03\xe0\xc3\x87R'), (30837,
b'\x01\x04\xe8\x03\x00\x00\x04\xe8\x03\x00\x00')]
>>> import gzip
>>> gz = gzip.open('README.dz')
>>> gz.extra_bytes
b''
>>> gz.extra_map
<gzip.ExtraMap object at 0xb6fd04ac>
>>> list(gz.extra_map.items())
[]
>>> gz.read(1)
b'T'
>>> gz.extra_bytes
b'RA\x08\x00\x01\x00\xcb\xe3\x01\x00T\x0b'
>>> list(gz.extra_map.items())
[(b'RA', b'\x01\x00\xcb\xe3\x01\x00T\x0b')]
----------
stage: needs patch -> patch review
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue17681>
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