New submission from Liyu Gong <gongl...@gmail.com>:

Suppose a.zip is z zip file containing 'abc/def/1.txt'

zf = zipfile.ZipFile('a.zip')
memf = zf.open('abc/def/1.txt', 'r')
zf2 = zipfile.ZipFile(memf) 

will raise an error. However, when a.zip is a tar file containing 
'abc/def/1.txt', the following codes

tf = tarfile.open('a.zip')
memf = tf.open('abc/def/1.txt', 'r')
zf2 = zipfile.ZipFile(memf) 

works well. Is it a known issue?

Thanks!

----------
files: a.zip
messages: 336356
nosy: liyugong
priority: normal
severity: normal
status: open
title: zipfile cannot handle zip in zip
versions: Python 3.6
Added file: https://bugs.python.org/file48164/a.zip

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<https://bugs.python.org/issue36088>
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