@orthocresol I think that should be off-topic here. This has nothing to do with chemistry, just with debugging code. I have no clue whether this is python or not, it certainly looks like it though. I cannot come up with a better title, because I don't actually find a real question in there...

I find it curious how this got so many up-votes, and other questions which have the software tag immediately get closed even though they are actually related to chemistry.

@orthocresol it's gone now...