How to generate unique 64 bits integers from Python?

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I need to generate unique 64 bits integers from Python. I've checked out the UUID module. But the UUID it generates are 128 bits integers. So that wouldn't work.

Do you know of any way to generate 64 bits unique integers within Python? Thanks.

uniqueidentifier guid uuid random python
5 Answers

You can use uuid4() which generates a single random 128-bit integer UUID. We have to 'binary right shift' (>>) each 128-bit integer generated by 64-bit (i.e. 128 - (128 - 64)).

from uuid import uuid4

bit_size = 64
sized_unique_id = uuid4().int >> bit_size
print(sized_unique_id)
user_79758000

Why not try this?

import uuid
  
id = uuid.uuid1()
  
# Representations of uuid1()

print (repr(id.bytes)) # k\x10\xa1n\x02\xe7\x11\xe8\xaeY\x00\x16>\x99\x0b\xdb

print (id.int)         # 142313746482664936587190810281013480411  

print (id.hex)         # 6b10a16e02e711e8ae5900163e990bdb
user_61333290
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