[Tutor] File Access

[Isr Gish]

Nick Lunt wrote:
   >
   >Hi Lloyd,
   >
   >thanks for the info. However, f.seek(0,2) takes me to the end of the
   >file as you say, but what I need is the whole last line of the file.
   >
   >After doing f.seek(0,2) successive f.seek(-1, 1) calls will walk me
   >backwards through the file but to make this useful I would need to keep
   >checking the current character for an "\n". And unfortunately calls to
   >f.read() and f.readline() take me back to the end of the file or line
   >respectively.

You can try reading a chunk that you are sure is more than the length of the longest  line. Then do str.rfind('\n') to find the last line.

All the best

Isr Gish


   >
   >Im on linux and the fseek(3) manpage seems to indicate that I cannot
   >take a file of unknown size and seek to the start of the last line,
   >would be nice if it did tho ;)
   >
   >Am I talking rubbish or do you agree ?
   >
   >Thanks again,
   >Nick.