package python-dirspec 13.10-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127

[zhangxiaoxia]

"apt-get install" cannot be used

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python-dirspec 13.10-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-36.39~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Wed Apr 3 15:39:59 2019
Dependencies:

DuplicateSignature:
 package:python-dirspec:13.10-1ubuntu1
 Setting up python-apt (1.1.0~beta1ubuntu0.16.04.2) ...
 /var/lib/dpkg/info/python-apt.postinst: 6: /var/lib/dpkg/info/python-apt.postinst: pycompile: not found
 dpkg: error processing package python-apt (--configure):
  subprocess installed post-installation script returned error exit status 127
ErrorMessage: subprocess installed post-installation script returned error exit status 127
InstallationDate: Installed on 2018-09-14 (201 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.5
 apt 1.2.29ubuntu0.1
SourcePackage: dirspec
Title: package python-dirspec 13.10-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)