class numpy.random.bit_generator.ISeedSequence Abstract base class for seed sequences.
BitGenerator implementations should treat any object that adheres to this interface as a seed sequence.
See also
SeedSequence, SeedlessSeedSequence
generate_state(n_words[, dtype]) |  Return the requested number of words for PRNG seeding. | 
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    https://docs.scipy.org/doc/numpy-1.17.0/reference/random/bit_generators/generated/numpy.random.bit_generator.ISeedSequence.html