After a Python 3.8 installation several problems arose with pip3. Since there was some conflict with a broken Anaconda, I reinstalled Anaconda and then I managed to fix it. But now apt-get seems to get broken and there is some problem with apt-listchanges:
eric@debian:~$ sudo apt-get install liblzma-dev Reading package lists... Done Building dependency tree Reading state information... Done liblzma-dev is already the newest version (5.2.2-1.2+b1). 0 upgraded, 0 newly installed, 0 to remove and 118 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] y Setting up apt-listchanges (3.10) ... Deferring configuration of apt-listchanges until python3 is available /var/lib/dpkg/info/apt-listchanges.postinst: 161: /var/lib/dpkg/info/apt-listchanges.postinst: python3: not found dpkg: error processing package apt-listchanges (--configure): subprocess installed post-installation script returned error exit status 127 Errors were encountered while processing: apt-listchanges E: Sub-process /usr/bin/dpkg returned an error code (1) I tried to reinstall it, but it failed:
eric@debian:~$ sudo dpkg --purge apt-listchanges (Reading database ... 305278 files and directories currently installed.) Removing apt-listchanges (3.10) ... /var/lib/dpkg/info/apt-listchanges.prerm: 6: /var/lib/dpkg/info/apt-listchanges.prerm: py3clean: not found dpkg: error processing package apt-listchanges (--purge): subprocess installed pre-removal script returned error exit status 127 Deferring configuration of apt-listchanges until python3 is available /var/lib/dpkg/info/apt-listchanges.postinst: 186: /var/lib/dpkg/info/apt-listchanges.postinst: py3compile: not found dpkg: error while cleaning up: subprocess installed post-installation script returned error exit status 127 Errors were encountered while processing: apt-listchanges I had a similar error with sudo apt install apt-listchanges. I can't use apt or apt-get, it fails. By the way:
eric@debian:/usr/bin$ which python /usr/bin/python eric@debian:/usr/bin$ python --version Python 2.7.13 eric@debian:/usr/bin$ which python3 eric@debian:/usr/bin$ which python3.8 /usr/local/bin/python3.8 eric@debian:/usr/bin$ python3.8 --version Python 3.8.3 (I've tried lots of answers proposed in related questions, but I prefer to summarize the problem for readability reasons; I don't want my question to be as messy as my python installation)
Thanks in advance!
(System: Debian Stretch w/KDE Plasma. I7 8500U 16Gb)
EDIT: I don't have a python3 symlink. Everything is fine with python 2.7:
eric@debian:~$ ls -l $(which python) lrwxrwxrwx 1 root root 9 Jan 24 2017 /usr/bin/python -> python2.7 But with python3:
eric@debian:~$ ls -l $(which python3) total 1508792 -rw-r--r-- 1 eric eric 8358 Oct 4 2019 041019 -rw-r--r-- 1 eric eric 26411849 Aug 12 2018 95681f94e7e4471b583d11b0c4cab198 drwxr-xr-x 26 eric eric 4096 May 18 22:33 anaconda3 drwxr-xr-x 11 eric eric 4096 Mar 3 01:34 Arduino -rw-r--r-- 1 eric eric 2729653 May 13 2019 c17_hill.pdf -rw-r--r-- 1 eric eric 1252901 Apr 8 2018 chromium-browser_56.0.2924.84-0ubuntu0.14.04.1.1011.deb -rw-r--r-- 1 eric eric 5187109 Apr 8 2018 chromium-browser_56.0.2924.84-0ubuntu0.14.04.1.1011.deb.1 -rw-r--r-- 1 eric eric 34341 Apr 8 2018 chromium-browser_56.0.2924.84-0ubuntu0.14.04.1.1011.deb.2 -rw-r--r-- 1 eric eric 58968590 May 25 2017 chromium-browser_56.0.2924.84-0ubuntu0.14.04.1.1011.deb.3 -rw-r--r-- 1 eric eric 1231294 Jul 22 2019 default22.pdf -rw-r--r-- 1 eric eric 1694387 Feb 13 2019 default.pdf drwxr-xrwx 2 eric eric 4096 Jul 30 15:31 Desktop drwxr-xrwx 109 eric eric 20480 Jul 30 15:17 Documents drwxr-xrwx 7 eric eric 20480 Jul 30 20:06 Downloads drwxr-xrwx 22 eric eric 4096 Jul 29 11:40 Dropbox -rw-r--r-- 1 eric eric 2422 Apr 13 2018 equivs-dummy_1.0_all.deb -rw-r--r-- 1 eric eric 141149 Feb 24 14:25 Figure_2.png -rw-r--r-- 1 eric eric 1662625 Mar 27 2019 ganancias19.pdf drwxr-xr-x 16 eric eric 4096 Feb 23 2018 hdf5-1.10.1 -rw-r--r-- 1 eric eric 15052127 Apr 27 2017 hdf5-1.10.1.tar.gz -rw-r--r-- 1 eric eric 1508692 Jun 18 2018 IC-215-780-User-and-Operation-Manual-Manual.pdf drwxr-xr-x 2 eric eric 4096 Sep 21 2019 King Crimson - Beat (40th Anniversary Series) drwxr-xr-x 2 eric eric 4096 Sep 21 2019 King Crimson - Discipline - 2011 [flac] drwxr-xr-x 2 eric eric 4096 Sep 7 2019 King Crimson {Three Of A Perfect Pair} -rw-r--r-- 1 root root 0 Feb 28 2019 minicom.cap -rw-r--r-- 1 eric eric 4592839 May 14 2019 muscle_hill.pdf drwxr-xrwx 127 eric eric 4096 Sep 6 2019 Music drwxr-xr-x 22 eric eric 4096 Feb 23 2018 netcdf-4.3.3 -rw-r--r-- 1 eric eric 1357215611 Apr 4 2018 NOOBS_v2_7_0.zip -rw-r--r-- 1 eric eric 758 Dec 11 2019 nuevo13.kmz drwxr-xr-x 3 eric eric 4096 Feb 23 2018 OceanColorProject drwxr-xrwx 153 eric eric 20480 Jul 7 18:11 Pictures drwxr-xrwx 2 eric eric 4096 Dec 28 2017 Public -rw-r--r-- 1 root root 15229 Mar 1 2019 putty.log drwxr-xr-x 18 eric eric 4096 May 15 22:10 Python-3.8.3 -rw-r--r-- 1 eric eric 17912964 May 13 18:48 Python-3.8.3.tar.xz -rw-r--r-- 1 root root 1475 Apr 13 2018 python-pypdf drwxr-xr-x 9 eric eric 4096 Feb 23 2018 seadas-7.4 -rw-r--r-- 1 root root 2340303 Apr 14 2018 status.bckup -rw-r--r-- 1 root root 46846864 Dec 6 2017 teamviewer_i386.deb drwxr-xrwx 2 eric eric 4096 Dec 28 2017 Templates drwxr-xr-x 2 eric eric 4096 May 18 20:06 tmp drwxr-xrwx 35 eric eric 4096 Jun 5 12:42 Videos eric@debian:~$ ls -l $(which python3.8) -rwxr-xr-x 1 root staff 17303968 May 15 22:11 /usr/local/bin/python3.8 I don't know if this is important, but it may help.
