Skip to content
/ shuffled Public

Python random permutations of large integer ranges

License

Notifications You must be signed in to change notification settings

bbc2/shuffled

Repository files navigation

Shuffled: Random iterators for large integer ranges

Shuffled is a library for iterating randomly and without repetition over integer ranges. It doesn't store all the integers in memory so that you can work with ranges of up to 2128 elements, even with your standard RAM available.

>>> shuffled_range = Shuffled(10)
>>> list(shuffled_range)
[4, 1, 2, 9, 8, 5, 3, 0, 6, 7]
>>> same_shuffled_range = Shuffled(10, seed=shuffled_range.seed)
>>> list(same_shuffled_range)
[4, 1, 2, 9, 8, 5, 3, 0, 6, 7]
>>> network = ipaddress.IPv4Network('10.0.0.0/8')
>>> shuffled_range = Shuffled(network.num_addresses)
>>> for index in shuffled_range:
...     print(network[index])
...
10.24.41.126
10.67.199.15
10.240.82.199
10.79.219.74
10.166.105.25
10.19.5.91
[...]