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maebert/get_shortcode.py

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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get_shortcode.py
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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