how generate a constant Unique id from python

Question

my application need use python generate a constant Unique id for run machine.
the constant Unique id mean is :
anytime in the same machine ,generate Unique id is always the SAME Unique id.

(maybe like system uuid,but my application not run root,cant't get system-uuid).
btw,i think python uuid model not good for me:
uuid1():use time,gen a uuid,this is not a constant Unique id
uuid3():cant use some string gen a uuid,but this uuid same in any machine.

Thanks!

the same machine: The same cpu+motherboard+OS instalation+same disk. action :
uuid1():use time gen a uuid,this is not a constant Unique id

define "the same machine". The same cpu? cpu+motherboard? The same OS instalation? The same disk? All of these? — loopbackbee, Nov 29 '12 at 06:32
Suppose admin creates a couple of identical virtual machines; do you expect your program to know which one it's running in? — James Waldby - jwpat7, Nov 29 '12 at 06:34
Try the mac address: http://stackoverflow.com/questions/159137/getting-mac-address — Alftheo, Nov 29 '12 at 06:37

score 1 · Answer 1 · answered Dec 04 '12 at 00:08

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You could try snowflake. If you have root, the ID can be persistent for the whole machine; otherwise, it can just save the ID in a file you have permission to create.

Disclosure: I wrote it. :)

answered Dec 04 '12 at 00:08

Shaddi

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Is it cross platform? – Volatil3 May 09 '16 at 17:17

how generate a constant Unique id from python

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