Comment # 4 on bug 1200960 from Bob Vickers

Thanks for the helpful comments. I've just returned from holiday, so can now
follow them up.

It turns out I DO have Python version 3 installed and if I use the command
'python3' then readline support works fine. But my Python 3 packages do not
provide a command "python"; is this expected behaviour?

Here is some more info:

$ ls -l /usr/bin/python*
lrwxrwxrwx 1 root root     9 Jun 10 10:14 /usr/bin/python -> python2.7
lrwxrwxrwx 1 root root     9 Jun 10 10:14 /usr/bin/python2 -> python2.7
-rwxr-xr-x 1 root root  6304 Jun 10 10:15 /usr/bin/python2.7
lrwxrwxrwx 1 root root     9 Jul  6 15:30 /usr/bin/python3 -> python3.6
-rwxr-xr-x 2 root root 10584 Jul  6 15:30 /usr/bin/python3.6
-rwxr-xr-x 2 root root 10584 Jul  6 15:30 /usr/bin/python3.6m
lrwxrwxrwx 1 root root    45 May  9 12:14 /usr/bin/pythontex ->
../share/texmf/scripts/pythontex/pythontex.py
$ rpm -qf /usr/bin/python
python-base-2.7.18-150000.41.1.x86_64
$ rpm -qf /usr/bin/python3
python3-base-3.6.15-150300.10.27.1.x86_64