Wouldn’t that be better? This would allow adding (commented) information to the end of a data file, without having to change the code.
Maybe, if other software did it that way, or this one from the start. It seems though that read.csv in R doesn’t use comments (since it’s faster, at least for them), nor does CSV.jl (that you likely should use; or Arrow.jl), though read.table defaults to supporting comments. I didn’t check the default in Pandas.
https://stat.ethz.ch/R-manual/R-devel/library/utils/html/read.table.html
CSV files aren’t standardized, but it was tried, and that RFC does not officially support comments, likely why the default isn’t to skip them:
CSV is “awful”, “CSV++” is a proposal (or just use a proper standard like, Arrow):
https://csv.juliadata.org/stable/examples.html#comment_example
OK Palli, thank you.