python unique id generation -


i want generate unique id have 10 characters. these include 32 characters/numerics i.e 'a' 'v' , '0' '9'.

adjacently repeated characters disallowed e.g '1hdhusiit' in 'ii' adjacent.

each key should unique.

def unique_id():     available_chars = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', \     'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', \     '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];     available_char_count = len(available_chars)     timestamp = int(time.time() * 1000)     # first char     char_index = timestamp % available_char_count     timestamp /= available_char_count     uuid = available_chars[char_index]     last_char = available_chars[char_index]     available_char_count -= 1     in xrange(9):         currently_available_chars = list(available_chars)         currently_available_chars.remove(last_char)         char_index = timestamp % available_char_count         timestamp /= available_char_count         uuid = currently_available_chars[char_index] + uuid         last_char = currently_available_chars[char_index]     return uuid

this should work unless system not provide time.time() support under 1 second of resolution. if case, able generate 1 new unique id per second.


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