Created
February 20, 2013 20:13
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Gets the shortest unique code (e.g. for URL shorteners) that avoids confusion between characters (such as I and 1, 0 and O).
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| def get_code(num, alphabet="23456789ABCDEFGHJKLMNPQRSTUVWXYZ"): | |
| base = len(alphabet) | |
| result = "" | |
| num, rem = divmod(num, base) | |
| while num: | |
| result += alphabet[rem] | |
| num, rem = divmod(num, base) | |
| result += alphabet[rem] | |
| return result[::-1] | |
| rows_in_db = 12345 | |
| new_shortcode = get_code(rows_in_db + 1) |
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