On 21 January 2013 12:06, Ferrous Cranus <nikos.gr...@gmail.com> wrote: > Τη Δευτέρα, 21 Ιανουαρίου 2013 11:31:24 π.μ. UTC+2, ο χρήστης Chris Angelico > έγραψε: >> >> Seriously, you're asking for something that's beyond the power of >> humans or computers. You want to identify that something's the same >> file, without tracking the change or having any identifiable tag. >> >> That's a fundamentally impossible task. > > No, it is difficult but not impossible. > It just cannot be done by tagging the file by: > > 1. filename > 2. filepath > 3. hash (math algorithm producing a string based on the file's contents) > > We need another way to identify the file WITHOUT using the above attributes.
This is a very old problem (still unsolved I believe): http://en.wikipedia.org/wiki/Ship_of_Theseus Oscar -- http://mail.python.org/mailman/listinfo/python-list
