Extracting info from large structured text files

Question

I need to read some large files (from 50k to 100k lines), structured in groups separated by empty lines. Each group start at the same pattern \"No.999999999 dd/mm/yyyy ZZZ

Answer 1

It looks good overall, but why do you have the line:

rpi = (line for line in rpi)

You can already iterate over the file object without this intermediate step.