How to find the beginning of last line of a big text file ?

Barak, Ron Ron.Barak at
Thu Jan 1 17:19:03 CET 2009


I have a very big text file: I need to find the place where the last line begins (namely, the offset of the one-before-the-last '\n' + 1).

Could you suggest a way to do that without getting all the file into memory (as I said, it's a big file), or heaving to readline() all lines (ditto) ?


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