Generate unguessable random unique IDs in python

unguessable_uuid.py

# 24 bytes (192 bits) is more than sufficient to make any ID unguessable.
# If you're insanely paranoid, you can bump this to 48 bytes (384 bits).
#
# If you want to use a number of bytes that is not a multiple of 24,
# then you will need to strip the '=' characters from the end of the
# byte string generated by urlsafe_b64encode.

# See https://neilmadden.blog/2018/08/30/moving-away-from-uuids/ for how to
# estimate the amount of time it would require to guess an ID.

import os
from base64 import urlsafe_b64encode
print(urlsafe_b64encode(os.urandom(24)))