package python-pip 8.1.1-2ubuntu0.1 [modified: usr/bin/pip] failed to install/upgrade: subprocess new pre-removal script returned error exit status 1

[William.D.Joshua]

i have not more information about this.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python-pip 8.1.1-2ubuntu0.1 [modified: usr/bin/pip]
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Tue Sep 13 20:52:23 2016
ErrorMessage: subprocess new pre-removal script returned error exit status 1
InstallationDate: Installed on 2016-05-26 (109 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: python-pip
Title: package python-pip 8.1.1-2ubuntu0.1 [modified: usr/bin/pip] failed to install/upgrade: subprocess new pre-removal script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Kai Kasurinen (kai-kasurinen)]

looks like you tweaked /usr/bin/python symlink point to python3