[Tutor] File Access

Isr Gish isrgish at fastem.com
Fri Apr 9 01:20:11 EDT 2004

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

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,

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