package python-lockfile 1:0.12.2-2ubuntu1 failed to install/upgrade: installed python-lockfile package post-installation script subprocess returned error exit status 127

[Jithendra Yenugula]

When installing any software, i am getting this error

ProblemType: Package
DistroRelease: Ubuntu 19.10
Package: python-lockfile 1:0.12.2-2ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-46.38-generic 5.3.18
Uname: Linux 5.3.0-46-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.8
AptOrdering:
 python-minimal:amd64: Install
 python-lockfile:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
Date: Sat Apr 25 16:07:09 2020
Dependencies:

DuplicateSignature:
 package:python-lockfile:1:0.12.2-2ubuntu1
 Setting up python2.7 (2.7.17-1~19.10) ...
 /var/lib/dpkg/info/python2.7.postinst: 9: /usr/bin/python2.7: not found
 dpkg: error processing package python2.7 (--configure):
  installed python2.7 package post-installation script subprocess returned error exit status 127
ErrorMessage: installed python-lockfile package post-installation script subprocess returned error exit status 127
InstallationDate: Installed on 2019-12-29 (117 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
PackageArchitecture: all
Python3Details: /usr/bin/python3.7, Python 3.7.5, python3-minimal, 3.7.5-1
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu2
 apt 1.9.4
SourcePackage: python-lockfile
Title: package python-lockfile 1:0.12.2-2ubuntu1 failed to install/upgrade: installed python-lockfile package post-installation script subprocess returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)