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improve fail message and use itertools chain

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This commit is contained in:
fabios 2014-12-27 21:19:00 -05:00
parent d19f7c7026
commit b747d9411a
1 changed files with 6 additions and 6 deletions
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12
packaging/os/apt.py
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@ -144,6 +144,7 @@ warnings.filterwarnings('ignore', "apt API not stable yet", FutureWarning)
import os
import datetime
import fnmatch
import itertools
# APT related constants
APT_ENV_VARS = dict(
@ -180,9 +181,8 @@ def package_versions(pkgname, pkg, pkg_cache):
# assume older version of python-apt is installed
# apt.package.Package#versions require python-apt >= 0.7.9.
pkg_cache_list = (p for p in pkg_cache.Packages if p.Name == pkgname)
pkg_list_of_lists = (p.VersionList for p in pkg_cache_list)
pkg_versions = (p for l in pkg_list_of_lists for p in l)
versions = set(p.VerStr for p in pkg_versions)
pkg_versions = (p.VersionList for p in pkg_cache_list)
versions = set(p.VerStr for p in itertools.chain(*pkg_versions))
return versions
@ -205,10 +205,10 @@ def package_status(m, pkgname, version, cache, state):
try:
if cache.get_providing_packages(pkgname):
return False, True, False
except AttributeError:
# older python-apt providing packages cannot be used
pass
m.fail_json(msg="No package matching '%s' is available" % pkgname)
except AttributeError:
# python-apt version too old to detect virtual packages
m.fail_json(msg="No package matching '%s' is available (python-apt version too old to detect virtual packages)" % pkgname)
else:
return False, False, False
try: