Comment 0 for bug 1581065

Some updates to requirements for openstack projects (glance and keystone specifically) is causing dh-python to incorrectly generate a != version dependency; this is the requires.txt entry:

 cryptography!=1.3.0,>=1.0

which causes (utimately):

dpkg-gencontrol: warning: can't parse dependency python-cryptography (!= 1.3.0)

from the generated dependency line:

"python-castellan, python-crypto (>= 2.6), python-cryptography (!= 1.3.0), python-debtcollector, python-eventlet, python-futurist, python-glance-store, python-httplib2, python-iso8601, python-jsonschema, python-keystoneauth1, python-keystoneclient, python-keystonemiddleware, python-migrate, python-monotonic, python-openssl, python-oslo.concurrency, python-oslo.config, python-oslo.context, python-oslo.db, python-oslo.i18n, python-oslo.log, python-oslo.messaging, python-oslo.middleware, python-oslo.policy, python-oslo.serialization, python-oslo.service, python-oslo.utils, python-osprofiler, python-paste, python-pastedeploy, python-pbr, python-prettytable, python-retrying, python-semantic-version, python-six (>= 1.9.0), python-sqlalchemy (>= 1.0~), python-sqlalchemy (<< 1.1), python-stevedore, python-taskflow, python-webob, python-wsme, python:any (<< 2.8), python:any (>= 2.6~), python:any (>= 2.7.5-5~), python:any (>= 2.7~),"

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: dh-python 2.20151103ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.20.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Thu May 12 15:15:36 2016
Dependencies:

EcryptfsInUse: Yes
InstallationDate: Installed on 2016-01-17 (115 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160117)
PackageArchitecture: all
SourcePackage: dh-python
UpgradeStatus: No upgrade log present (probably fresh install)