[Python-modules-team] Bug#952591: python3-urllib3: doesn't work with python3-six 1.14.0-2

[Vaclav Ovsik]

Package: python3-urllib3
Version: 1.25.8-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,
there is an incompatilibity of python3-urllib3 with python3-six
1.14.0-2. I failed to use python3-requests and while analyzing the problem
further found a problem in urllib3...

This is expected behaviour (Debian 10):

>>> from urllib3.util import parse_url
>>> parse_url('http://www.root.cz')
Url(scheme='http', auth=None, host='www.root.cz', port=None, path=None, query=None, fragment=None)
>>>

But on current Debian Sid i'm getting:

>>> from urllib3.util import parse_url
>>> parse_url('http://www.root.cz')
Traceback (most recent call last):
  File "<input>", line 1, in <module>
    parse_url('http://www.root.cz')
  File "/usr/lib/python3/dist-packages/urllib3/util/url.py", line 392, in parse_url
    return six.raise_from(LocationParseError(source_url), None)
  File "<string>", line 3, in raise_from
urllib3.exceptions.LocationParseError: Failed to parse: http://www.root.cz

more specificaly:

> /usr/lib/python3/dist-packages/urllib3/util/url.py(296)_normalize_host()
-> return six.ensure_str(
(Pdb) 
AttributeError: module 'six' has no attribute 'ensure_str'

Thanks
-- 
Zito

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-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.4.0-4-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=cs_CZ.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-urllib3 depends on:
ii  python3      3.7.5-3
ii  python3-six  1.14.0-2

Versions of packages python3-urllib3 recommends:
ii  ca-certificates  20190110

Versions of packages python3-urllib3 suggests:
ii  python3-cryptography  2.8-3
ii  python3-idna          2.6-2
ii  python3-openssl       19.0.0-1
pn  python3-socks         <none>

-- no debconf information