class_docstr: Maintains state between `page_trend_test` executions
class_docstr_tok: ["Maintains","state","between","`","page_trend_test","`","executions"]
docstr: Survival function of Page's L statistic
docstr_tok: ["Survival","function","of","Page","'s","L","statistic"]
code: def sf(self, l, n):
      """Survival function of Page's L statistic"""
      ps = [self.pmf(l, n) for l in range(l, n * self.b + 1)]
      return np.sum(ps)
  
file_path: catboost/contrib/python/scipy/py3/scipy/stats/_page_trend_test.py
imports: from itertools import permutations
  import numpy
  import math
  from ._continuous_distns import norm
  import scipy.stats
  from dataclasses import make_dataclass
label_desc: Use image node_id 3 for calling the _PageL obj's underlying member method code with example usage: obj.sf(l, n) and returns: np