On systems without future, there would issues with missing past.
from past.builtins import xrange
ModuleNotFoundError: No module named 'past'
Installing future like pip install future can help, but it bothers.
Changing xrange to range can be OK since python3 has no xrange anymore, while both 2 and 3 can have range.
The performance impact with python2 should be minor.
Tested OK on latest Debian bullseye/bookworm, Ubuntu jammy, and Archlinux, with python2 linked to 2.7.18, or 2.7.3, while python linked to 3.10.8, 3.10.6, or 3.9.2.
On systems without
future
, there would issues with missingpast
.Installing
future
likepip install future
can help, but it bothers.Changing
xrange
torange
can be OK since python3 has noxrange
anymore, while both 2 and 3 can haverange
.The performance impact with python2 should be minor.
Tested OK on latest Debian bullseye/bookworm, Ubuntu jammy, and Archlinux, with python2 linked to 2.7.18, or 2.7.3, while python linked to 3.10.8, 3.10.6, or 3.9.2.