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Date: Tue, 19 Feb 2013 23:59:34 +0100
Subject: Re: Verification of bank number using modulus 11
From: Morten Engvoldsen <mortenengv@gmail.com>
To: ian.g.kelly@gmail.com, python@mrabarnett.plus.com
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Hi Team,
Thanks for the code.
 I have altered the code with below code, it is able to validate the number
now,

def calc_checkdigit(isbn):
isbn = isbn.replace(".", "")
check_digit = int(isbn[-1])
isbn = isbn[:-1]
if len(isbn) != 10:
  return False
weights = [5, 4, 3, 2, 7, 6, 5, 4, 3, 2]
result = sum(w * (int(x)) for w, x in zip(weights, isbn))
remainder = result % 11
if remainder == 0:
   check = 0
else:
   check = 11 - remainder
return check == check_digit

calc_checkdigit(""8601.11.**17947"")


But can you tell me how could i implement below

"If digits 5 and 6 of the account number are zeros, the check digit is
calculated on the 7, 8, 9 and 10th digit of the account number."

which means if account number is "8601.00.**17947" then check digit is
calculate as

 result = (1*5) + (7*4)+ (9*3)+(4*2)

remainder = result % 11

check_digit = 11 - remainder

Can you tell me how can i implement this ?

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<div>Hi Team,</div><div>Thanks for the code.</div><div>=A0I have altered th=
e code with below code, it is able to validate the number now,</div><div>=
=A0</div><div>def calc_checkdigit(isbn):<br>         isbn =3D isbn.replace(=
&quot;.&quot;, &quot;&quot;)<br>
         check_digit =3D int(isbn[-1])<br>         isbn =3D isbn[:-1]<br>  =
       if len(isbn) !=3D 10:<br>               =A0 return False</div><div>w=
eights =3D [5, 4, 3, 2, 7, 6, 5, 4, 3, 2]<br>result =3D sum(w * (int(x)) fo=
r w, x in zip(weights, isbn))<br>
remainder =3D result % 11<br>if remainder =3D=3D 0:</div><div>=A0=A0 check =
=3D 0</div><div>else:</div><div>=A0=A0=A0check =3D 11 - remainder</div><div=
>return check =3D=3D check_digit</div><div>=A0</div><div>calc_checkdigit(&q=
uot;&quot;8601.11.<u></u>17947&quot;&quot;)</div>
<div>=A0</div><div>=A0</div><div>But can you tell me how could i implement =
below<font size=3D"3" face=3D"TimesNewRomanPSMT"><font size=3D"3" face=3D"T=
imesNewRomanPSMT"><p align=3D"LEFT">&quot;If digits 5 and 6 of the account =
number are zeros, the check digit is calculated on the 7, 8, 9 and 10th dig=
it of the account number.&quot;</p>
<p align=3D"LEFT">which means if account number is &quot;8601.00.<u></u>179=
47&quot; then check digit is calculate as=A0</p><p align=3D"LEFT">=A0result=
 =3D (1*5) + (7*4)+ (9*3)+(4*2)</p><p align=3D"LEFT">remainder =3D result %=
 11</p><p align=3D"LEFT">
check_digit =3D 11 - remainder<p align=3D"LEFT">Can you tell me how can i i=
mplement this ?<p align=3D"LEFT">=A0</p></p></p></font><p align=3D"LEFT"></=
p></font><p align=3D"LEFT"><br>=A0</p></div><div>=A0</div>

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