I once debugged a case like that. A NumPy script expected to read in a table from a file, but the file used /r newlines, so the NumPy script read it in as a ver

I once debugged a case like that. A NumPy script expected to read in a table from a file, but the file used /r newlines, so the NumPy script read it in as a very long single line. Then later references to table lines >1 broke the script. The strange part is, the file and the script were provided by the same person.