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Subject: Re: Converting a string to a number by using INT  (no hash method)
From: Ferrous Cranus <nikos.gr33k@gmail.com>
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Xref: csiph.com comp.lang.python:37330

=CE=A4=CE=B7 =CE=A4=CF=81=CE=AF=CF=84=CE=B7, 22 =CE=99=CE=B1=CE=BD=CE=BF=CF=
=85=CE=B1=CF=81=CE=AF=CE=BF=CF=85 2013 7:24:26 =CE=BC.=CE=BC. UTC+2, =CE=BF=
 =CF=87=CF=81=CE=AE=CF=83=CF=84=CE=B7=CF=82 Leonard, Arah =CE=AD=CE=B3=CF=
=81=CE=B1=CF=88=CE=B5:
> > No need, to turn the number back to a path anymore, just the path to a =
number, to identify the specific .html page
>=20
> >=20
>=20
> > Can this be done?
>=20
>=20
>=20
> Guaranteed to be unique?  Not even remotely possible.  Even with a lookup=
 table approach (which defeats your purpose of not storing the path) with 4=
 digits you're looking at a maximum 10000 unique file paths before your sys=
tem duplicates numbers.  And that's the best-case scenario.  Anything else =
would be worse.
>=20
>=20
>=20
> Not guaranteed to be unique?  Easy.  Just take then previously given exam=
ple of pin =3D int( htmlpage.encode("hex"), 16 ) and mod it to your limit, =
to make:
>=20
> pin =3D int( htmlpage.encode("hex"), 16 ) % 10000
>=20
> It'll give you your number, but there are no guarantees of uniqueness.  Y=
ou're looking at more blind random luck using that.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
pin =3D int( htmlpage.encode("hex"), 16 ) % 10000=20
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Can you please explain the differences to what you have posted opposed to t=
his perl coding?

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
foreach my $ltr(@ltrs){
        $hash =3D ( $hash + ord($ltr)) %10000;
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

I want to understand this and see it implemented in Python.