Probability mass function at k of the given RV.
k : array-like
quantiles
arg1, arg2, arg3,... : array-like
The shape parameter(s) for the distribution (see docstring of the instance object for more information)
loc : array-like, optional
location parameter (default=0)
pmf : array-like
Probability mass function evaluated at k
scipy.stats.rv_discrete
scipy.stats.rv_discrete.cdf