package python2.7 2.7.6-8ubuntu0.4 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration

got error while updating python 2.7

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: python2.7 2.7.6-8ubuntu0.4
ProcVersionSignature: Ubuntu 4.4.0-104.127~14.04.1-generic 4.4.98
Uname: Linux 4.4.0-104-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.27
AptOrdering:
 firefox: Install
 firefox-locale-en: Install
 python2.7: Configure
 firefox: Configure
 firefox-locale-en: Configure
Architecture: amd64
Date: Wed Jan 3 17:45:22 2018
DpkgHistoryLog:
 Start-Date: 2018-01-03 17:44:45
 Commandline: aptdaemon role='role-commit-packages' sender=':1.67'
 Upgrade: firefox-locale-en:amd64 (57.0.1+build2-0ubuntu0.14.04.1, 57.0.3+build1-0ubuntu0.14.04.1), firefox:amd64 (57.0.1+build2-0ubuntu0.14.04.1, 57.0.3+build1-0ubuntu0.14.04.1)
DuplicateSignature: package:python2.7:2.7.6-8ubuntu0.4:package is in a very bad inconsistent state; you should reinstall it before attempting configuration
ErrorMessage: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
InstallationDate: Installed on 2017-07-25 (163 days ago)
InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.17
SourcePackage: python2.7
Title: package python2.7 2.7.6-8ubuntu0.4 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
UpgradeStatus: No upgrade log present (probably fresh install)