When upgrading the source in Ubuntu 16.04, an error is reported:

ubuntu@SIFT-SYS-7048GR-TR:~$ sudo apt-get upgrade
[sudo] password for ubuntu:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
3 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue?[Y/n]
Setting up python-gi (3.20.0-0ubuntu1) ...
/var/lib/dpkg/info/python-gi.postinst: 6: /var/lib/dpkg/info/python-gi.postinst: pycompile: not found
dpkg: error processing package python-gi (--configure):
subprocess installed post-installation script returned error exit status 127
dpkg: dependency problems prevent configuration of alacarte:
alacarte depends on python-gi (>= 3.0); however:
Package python-gi is not configured yet.

dpkg: error processing package alacarte (--configure):
dependency problems - leaving unconfigured
Setting up python-opencv (2.4.9.1+dfsg-1.5ubuntu1) ...
No apport report written because the error message indicates its a followup error from a previous failure.
/var/lib/dpkg/info/python-opencv.postinst: 6: /var/lib/dpkg/info/python-opencv.postinst: pycompile: not found
dpkg: error processing package python-opencv (--configure):
subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
python-gi
alacarte
python-opencv
E: Sub-process /usr/bin/dpkg returned an error code (1)
ubuntu@SIFT-SYS-7048GR-TR:~$ sudo dpkg -C
The following packages have been unpacked but not yet configured.
They must be configured using dpkg --configure or the configure
menu option in dselect for them to work:
alacarte easy GNOME menu editing tool

The following packages are only half configured, probably due to problems
configuring them the first time. The configuration should be retried using
dpkg --configure <package> or the configure menu option in dselect:
python-gi Python 2.x bindings for gobject-introspection libraries
python-opencv Python bindings for the computer vision library

ubuntu@SIFT-SYS-7048GR-TR:~$ sudo dpkg --configure python-gi
Setting up python-gi (3.20.0-0ubuntu1) ...
/var/lib/dpkg/info/python-gi.postinst: 6: /var/lib/dpkg/info/python-gi.postinst: pycompile: not found
dpkg: error processing package python-gi (--configure):
subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
python-gi
ubuntu@SIFT-SYS-7048GR-TR:~$ sudo apt-get install --reinstall apport
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
3 not fully installed or removed.
Need to get 120 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://cn.archive.ubuntu.com/ubuntu xenial-updates/main amd64 apport all 2.20.1-0ubuntu2.10 [120 kB]
Fetched 120 kB in 0s (684 kB/s)
(Reading database ... 290222 files and directories currently installed.)
Preparing to unpack .../apport_2.20.1-0ubuntu2.10_all.deb ...
/var/lib/dpkg/info/apport.prerm: 19: /var/lib/dpkg/info/apport.prerm: pyclean: not found
dpkg: warning: subprocess old pre-removal script returned error exit status 127
dpkg: trying script from the new package instead ...
/var/lib/dpkg/tmp.ci/prerm: 19: /var/lib/dpkg/tmp.ci/prerm: pyclean: not found
dpkg: error processing archive /var/cache/apt/archives/apport_2.20.1-0ubuntu2.10_all.deb (--unpack):
subprocess new pre-removal script returned error exit status 127
/var/lib/dpkg/info/apport.postinst: 13: /var/lib/dpkg/info/apport.postinst: pycompile: not found
dpkg: error while cleaning up:
subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
/var/cache/apt/archives/apport_2.20.1-0ubuntu2.10_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

where it repeatedly appears

/var/lib/dpkg/info/apport.postinst: 13: /var/lib/dpkg/info/apport.postinst: pycompile: not found

Solution:

So, it’s probably a problem with python and apport

Then, Google related information, the result is that apport and python need to be reinstalled, related links: package-management and dpkg returned an error code, related names are as follows:

reinstall python:

sudo apt-get -m –reinstall install python python-minimal dh-python

sudo apt-get -f install

reinstall apport:

sudo apt-get update

sudo apt-get install –reinstall apport

sudo apt-get -f install

sudo apt-get dist-upgrade

Outcome:

ubuntu@SIFT-SYS-7048GR-TR:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.