This is a small module for generating randoms strings of a given pattern. It is also capable of estimating various metrics for this pattern (probability of collision, estimated collision count and total variants count).
$ pip install funny-codes
>>> from funny_codes import FunnyCodes
>>> my_codes = FunnyCodes('TATAN-76')
>>> my_codes.next() # the following is a random code matching the pattern
HIPAS-12
>>> my_codes.next()
MOVER-87
>>> my_codes.variants_count()
20000844
>>> my_codes.collision_prob(1000)
0.024664677603280283
>>> my_codes.expected_collisions(10000)
2.499235797673464