A 3-dimensional programming language, where all programs are cubes.
Given the difficulty of representing a 3D cube in 2D ASCII, the program input format is rather odd, and specified on the command line when called. For example, if the program is a cube of size 3x3x3, each of the three program 'levels' are in the files file.lv1, file.lv2 and file.lv3, and the command line arguments (ARGV) are 10 and 20, then the program is run with the invocation
python levels.py --size=3 --file --utf file.lv1 file.lv2 file.lv3 10 20
The --size flag is required, every other option can be swapped out for another, or removed entirely.
Levels is written in Python 3.7, and some functions (e.g. math.gcd) may not work if run in earlier versions.
Standard invocations are
python levels.py --size=<SIZE> --file --utf <...FILES...> <...ARGS...>
python levels.py --size=<SIZE> --cmd --utf <...CODE...> <...ARGS...>
For running files and commands line arguments respectively.