How to make unique short URL with Python?

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Edit: Here, I wrote a module for you. Use it. http://code.activestate.com/recipes/576918/

Counting up from 1 will guarantee short, unique URLS. /1, /2, /3 … etc.

Adding uppercase and lowercase letters to your alphabet will give URLs like those in your question. And you’re just counting in base-62 instead of base-10.

Now the only problem is that the URLs come consecutively. To fix that, read my answer to this question here:

Map incrementing integer range to six-digit base 26 max, but unpredictably

Basically the approach is to simply swap bits around in the incrementing value to give the appearance of randomness while maintaining determinism and guaranteeing that you don’t have any collisions.

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