Set various random seeds required to ensure reproducible results. The
seed value will establish a new random seed for Python and NumPy,
and will also (by default) disable hash randomization.
py_set_seed(seed, disable_hash_randomization = TRUE)
A single value, interpreted as an integer
Disable hash randomization, which is another common source of variable results. See https://docs.python.org/3.4/using/cmdline.html#envvar-PYTHONHASHSEED
This function does not set the R random seed, for that you