>>> from hashlib import sha1
>>> sha1('GangGreene-20120203-1012').hexdigest()
'ef764a2fe44532008dc9a99c391c70cd85ec9d82'
It is too long and not verifiable.
>>> from uuid import uuid4
>>> uuid4()
UUID('2c14484b-5a0c-4f4b-b7bc-8187548b4888')
Pretty much the same what you suggest but simpler and shorter. Not quite
elegant for humans.
Here are examples per this post:
http://mindref.blogspot.com/2012/11/generate-account-number.html
>>> account_number(1)
'Z05738521581'
>>> account_number(2)
'Z17888279480'
>>> account_number(3)
'Z07395350007'
Short, human readable and satisfy original requirements.
Andriy
----------------------------------------
> From: ganggre...@example.com
> Subject: Re: How to generate account number?
> Date: Fri, 2 Nov 2012 18:02:09 -0400
> To: python-list@python.org
>
> On Sat, 03 Nov 2012 00:13:19 +0300, Andriy Kornatskyy wrote:
>
>> Requirements for `account number` generator:
>>
>> 1. Issue pseudo random consistent number (must be unique for dozen
>> millions of records)
>> 2. Easy check validity (without a need to make a database call)
>>
>> Interested? Read more here:
>>
>> http://mindref.blogspot.com/2012/11/generate-account-number.html
>>
>> Comments or suggestions are welcome.
>>
>> Thanks.
>>
>> Andriy Kornatskyy
>
> generate sha1sum on the ((key database record(s))+date+timeofday)
> Should be unique for billions/trillions of records.
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