scipy.stats.rv_discrete.
isf#
- rv_discrete.isf(q, *args, **kwds)[source]#
 Inverse survival function (inverse of
sf) at q of the given RV.- Parameters:
 - qarray_like
 Upper tail probability.
- arg1, arg2, arg3,…array_like
 The shape parameter(s) for the distribution (see docstring of the instance object for more information).
- locarray_like, optional
 Location parameter (default=0).
- Returns:
 - kndarray or scalar
 Quantile corresponding to the upper tail probability, q.