VAT for Colombia, South America

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The algorithm for the VAT for Colombia (Called RUT) is:

def check_vat_co(vat):
    '''
    Check Colombian VAT number. Called RUT
    '''
    if len(str(vat)) != 10:
        return False
    try:
        int(vat)
    except ValueError:
        return False
    nums = [3, 7, 13, 17, 19, 23, 29, 37, 41, 43, 47, 53, 59, 67, 71]
    sum = 0
    RUTLen = len(str(vat))
    for i in range (RUTLen - 2, -1, -1):
        sum += int(str(vat)[i]) * nums [RUTLen - 2 - i]
    if sum % 11 > 1:
        return str(vat)[RUTLen - 1] == str(11 - (sum % 11))
    else:
        return str(vat)[RUTLen - 1] == str(sum % 11)

Example: 9001279338 is valid one.

Regards

Juan Fernando Jaramillo

Original issue reported on code.google.com by juanf.ja...@gtempaccount.com on 4 Sep 2009 at 7:19

[GoogleCodeExporter]

Fix with changeset 1b20d5a2e2a0

Original comment by cedric.krier@b2ck.com on 13 Nov 2009 at 5:41

• Changed state: Fixed

[GoogleCodeExporter]

Original comment by cedric.krier@b2ck.com on 13 Nov 2009 at 5:51