Bug#783981: AttributeError: 'module' object has no attribute 'add_metaclass'

[Gilles Mocellin]

Package: python-debian
Version: 0.1.27
Severity: important

Dear Maintainer,

Since I've upgraded to jessie, I cannot use querybts / reportbug.
I'v got a pythin backtrace :

~  reportbug                                                                                                                                         1 
Traceback (most recent call last):
  File "/usr/bin/reportbug", line 38, in <module>
    from reportbug import utils
  File "/usr/lib/python2.7/dist-packages/reportbug/utils.py", line 70, in <module>
    import debbugs
  File "/usr/lib/python2.7/dist-packages/reportbug/debbugs.py", line 43, in <module>
    import checkversions
  File "/usr/lib/python2.7/dist-packages/reportbug/checkversions.py", line 39, in <module>
    from debian.deb822 import Deb822
  File "/usr/lib/python2.7/dist-packages/debian/deb822.py", line 1481, in <module>
    @six.add_metaclass(_ClassInitMeta)
AttributeError: 'module' object has no attribute 'add_metaclass'

It's working here on my sid PC with the same reportbug version. The same python-debian version too.
But python-six is 1.8.0-1 in jessie but 1.9.0-3 in sid. Probably the cause here.


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

Kernel: Linux 3.19.0-trunk-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages python-debian depends on:
ii  python-chardet  2.3.0-1
ii  python-six      1.9.0-3
pn  python:any      <none>

Versions of packages python-debian recommends:
ii  python-apt  0.9.3.11

Versions of packages python-debian suggests:
ii  gpgv  1.4.18-7

-- no debconf information