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Subject: Re: Converting a string to a number by using INT  (no hash method)
From: Alan Spence <alan.spence@ntlworld.com>
In-Reply-To: <97e31693-5928-4e43-bc97-c449118f2de0@googlegroups.com>
Date: Tue, 22 Jan 2013 20:00:12 +0000
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On 22 Jan 2013, at 19:28, Ferrous Cranus <nikos.gr33k@gmail.com> wrote:

> =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 9:02:48 =CE=BC.=CE=BC. UTC+2, =
=CE=BF =CF=87=CF=81=CE=AE=CF=83=CF=84=CE=B7=CF=82 Michael Torrie =
=CE=AD=CE=B3=CF=81=CE=B1=CF=88=CE=B5:
>> On 01/22/2013 11:37 AM, Ferrous Cranus wrote:
>>=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 pin =3D=
 int(
>>=20
>>> htmlpage.encode("hex"), 16 ) % 10000=20
>>=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
>>=20
>>>=20
>>=20
>>> Can you please explain the differences to what you have posted
>>=20
>>> opposed to this perl coding?
>>=20
>>>=20
>>=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 =
foreach my
>>=20
>>> $ltr(@ltrs){ $hash =3D ( $hash + ord($ltr)) %10000;=20
>>=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
>>=20
>>>=20
>>=20
>>> I want to understand this and see it implemented in Python.
>>=20
>>=20
>>=20
>> It isn't quite the thing.  The perl code is merely a checksum of the
>>=20
>> ascii value of the characters in the file name, that is then chopped
>>=20
>> down to a number < 10000.  The Python code is taking the ascii value =
of
>>=20
>> each character in the file name, converting it to a hexadecimal pair =
of
>>=20
>> digits, stringing them all out into a long string, then converting =
that
>>=20
>> to a number using the hexadecimal number parser. This results in a
>>=20
>> *very* large number, 8-bits per letter in the original file name, and
>>=20
>> then chops that down to 10000.  Technically neither method is a hash =
and
>>=20
>> neither will generate unique numbers.
>>=20
>>=20
>>=20
>> Here's the python algorithm used on a short word:
>>=20
>> 'hello' =3D> '68656c6c6f' (h =3D 0x68', e=3D0x65', 0x6c', 0=3D0x6f)
>>=20
>> =3D> 0x68656c6c6f =3D> 448378203247
>>=20
>> mod that with 10000 and you get 3247
>>=20
>>=20
>>=20
>> If you would simply run the python interpreter and try these things =
out
>>=20
>> you could see how and why they work or not work.  What is stopping =
you
>>=20
>> from doing this?
>=20
>=20
> May i sent you my code by mail so for you see whats wrong and =
http://superhost.gr produces error?<br><br>
>=20
> 1. this is not a script that iam being paid for.
> 2, this is not a class assignemnt
>=20
> I just want to use that method of gettign this to work.
> --=20
> http://mail.python.org/mailman/listinfo/python-list

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