Steady function

[capocchi]

According to the following matrix implemented in a file fn and loaded using readmat function, the steady function randomly return a list of 0. I use python in version 3.7.

R R .5 R N .25 R S .25 N R .5 N N 0 N S .5 S R .25 S N .25 S S .5

Markov matrix

P = pykov.readmat(fn) Pi = P.steady() assert(Pi.sum()!=0)

Thanks in advance.