package python-pyasn1 0.1.7-1ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[vanitha]

Traceback (most recent call last):
  File "/usr/lib/python2.7/site.py", line 569, in <module>
    main()
  File "/usr/lib/python2.7/site.py", line 551, in main
    known_paths = addusersitepackages(known_paths)
  File "/usr/lib/python2.7/site.py", line 278, in addusersitepackages
    user_site = getusersitepackages()
  File "/usr/lib/python2.7/site.py", line 253, in getusersitepackages
    user_base = getuserbase() # this will also set USER_BASE
  File "/usr/lib/python2.7/site.py", line 242, in getuserbase
    from sysconfig import get_config_var
  File "/usr/lib/python2.7/sysconfig.py", line 10, in <module>
    'stdlib': '{base}/'+sys.lib+'/python{py_version_short}',
AttributeError: 'module' object has no attribute 'lib'
dpkg: error processing package python-pyinotify (--configure):

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: python-pyasn1 0.1.7-1ubuntu2
ProcVersionSignature: Ubuntu 3.19.0-25.26~14.04.1-generic 3.19.8-ckt2
Uname: Linux 3.19.0-25-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
Date: Mon Nov 30 14:36:08 2015
DuplicateSignature: package:python-pyasn1:0.1.7-1ubuntu2:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-11-24 (5 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
SourcePackage: pyasn1
Title: package python-pyasn1 0.1.7-1ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)