class_docstr: Distribution of MWU statistic under the null hypothesis
class_docstr_tok: ["Distribution","of","MWU","statistic","under","the","null","hypothesis"]
docstr: Probability mass function
docstr_tok: ["Probability","mass","function"]
code: def pmf(self, k, m, n):
      """Probability mass function"""
      self._resize_fmnks(m, n, np.max(k))
      # could loop over just the unique elements, but probably not worth
      # the time to find them
      for i in np.ravel(k):
          self._f(m, n, i)
      return self._fmnks[m, n, k] / special.binom(m + n, m)
  
file_path: catboost/contrib/python/scipy/py3/scipy/stats/_mannwhitneyu.py
imports: import numpy
  from dataclasses import make_dataclass
  from collections import namedtuple
  from scipy import special
  from scipy import stats
label_desc: Use image node_id 2 for calling the _MWU obj's underlying member method code with example usage: obj.pmf(k, m, n) and returns: unknown