This is makeindex, version 2.15 [TeX Live 2017] (kpathsea + Thai support).
Scanning style file ./python.ist.......done (7 attributes redefined, 0 ignored).
Scanning input file beelance2.idx....done (53 entries accepted, 0 rejected).
Sorting entries....done (321 comparisons).
Generating output file beelance2.ind....done (98 lines written, 0 warnings).
Output written in beelance2.ind.
Transcript written in beelance2.ilg.