05-14-2019
OK I will take your word for it...
Well if you wish to have Python 2.x.x temporarily you could try copying 'python' to 'python3' in probably the '/usr/bin/' drawer and then copying 'python2' to 'python'; and when finished change back again so that 'python3' becomes python again.
It should see the correct PYTHONPATH but don't quote me on it.
The only problem might be special modules, say for example 'scipy', might not be seen.
It is up to you but I still say DON'T! Even experienced professional programmers would think twice before messing.
EDIT:
You might need to be in 'root' to do this...
Last edited by wisecracker; 05-14-2019 at 02:26 PM..
Reason: See EDIT:
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LEARN ABOUT DEBIAN
dh_pysupport
DH_PYSUPPORT(1) python-support DH_PYSUPPORT(1)
NAME
dh_pysupport - use the python-support framework to handle Python modules
SYNOPSIS
dh_pysupport [debhelper options] [-V X.Y] [-X item [...]] [-n] [module dirs ...]
DESCRIPTION
dh_pysupport is a debhelper program that will scan your package, detect public modules in /usr/lib/pythonX.Y/site-packages, and move them
to the shared Python modules location. It will generate appropriate postinst/prerm scripts to byte-compile modules installed there for all
available python versions.
It will also look for private Python modules and will byte-compile them with the current Python version. You may have to list the
directories containing private Python modules.
If a file named debian/pyversions exists, it is used to determine the python versions with which the package can work.
Appropriate dependencies on python-support, python and pythonX.Y are put in ${python:Depends}. The ${python:Versions} and
${python:Provides} optional substitution variables are made available as well.
OPTIONS
module dirs
If your package installs private python modules in non-standard directories, you can make dh_pysupport check those directories by
passing their names on the command line. By default, it will check /usr/lib/$PACKAGE, /usr/share/$PACKAGE, /usr/lib/games/$PACKAGE and
/usr/share/games/$PACKAGE
-n, --noscripts
Do not modify postinst/postrm scripts.
-d This option is deprecated.
-V X.Y
Force private modules to be bytecompiled with the specific X.Y python version, regardless of the default python version on the system.
-X item, --exclude=item
Exclude files that contain "item" anywhere in their filename from being taken into account to generate the python dependency. It also
excludes them from byte-compilation. You may use this option multiple times to build up a list of things to exclude.
CONFORMS TO
Python policy as of 2006-08-10
SEE ALSO
debhelper(7)
This program is a part of python-support but is made to work with debhelper.
AUTHORS
Josselin Mouette <joss@debian.org>, Raphael Hertzog <hertzog@debian.org>
1.0.15 2012-06-30 DH_PYSUPPORT(1)