Question

I know how to set the random seed in python

random.seed([x])

Once the seed is set is there any way to read it back and figure out what value was passed to the seed() function?

Answer 1

While the underlying algorithm for Python’s Random (Mersenne Twister) is deterministic, the seed is not stored anywhere in the implementation’s memory space. It is up to the caller to store the seed, if necessary.

http://docs.python.org/library/random.html#module-random

For more info on Python’s implementation (or to override it with your own seed storing random class) see:

http://hg.python.org/cpython/file/0b650272f58f/Lib/random.py

and

http://hg.python.org/cpython/file/0b650272f58f/Python/random.c