[Tutor] Generating random alphanumeric codes

[taserian]

First of all, determine your alphabet (the pool of characters you'll derive
your 4-character code from):

- For example, using an English alphabet with both lowercase and uppercase
letters and digits 0-9 makes for 62 characters (26 + 26 + 10).

Then, ask if you want to allow a character to repeat itself in the
4-character code.

- If so, then it's easy: take the length of your alphabet, and calculate
(length)^4. In my example above, it would be 62^4 = 14,776,336

- If not, then it's a little more complicated, calculate (length) *
(length-1) * (length-2) * (length-3), or in other words the factorial of
length minus the factorial of (length - 4). In my example, 62! - (62-4)! =
13,388,280

AR

On Tue, Jun 26, 2012 at 10:52 AM, Sithembewena Lloyd Dube <zebra05 at gmail.com
> wrote:

> HI,
>
> Would anyone have tips on how to generate random 4-digit alphanumeric
> codes in python? Also, how does one calculate the number of possible
> combinations?
>
> Thanks in advance.
>
> --
> Regards,
> Sithembewena Lloyd Dube
>
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