class_docstr: Alternate random number generator using sources provided
  by the operating system (such as /dev/urandom on Unix or
  CryptGenRandom on Windows).
  
   Not available on all systems (see os.urandom() for details).
class_docstr_tok: ["Alternate","random","number","generator","using","sources","provided","by","the","operating","system","(","such","as","\/dev\/urandom","on","Unix","or","CryptGenRandom","on","Windows",")",".","Not","available","on","all","systems","(","see","os.urandom","(",")","for","details",")","."]
docstr: Stub method.  Not used for a system random number generator.
docstr_tok: ["Stub","method",".","Not","used","for","a","system","random","number","generator","."]
code: def seed(self, *args, **kwds):
      "Stub method.  Not used for a system random number generator."
      return None
  
imports: from warnings import warn
  from math import log, exp, pi, e, ceil
  from math import sqrt, acos, cos, sin
  from math import tau, floor, isfinite
  from os import urandom
  from _collections_abc import Set, Sequence
  from operator import index
  from itertools import accumulate, repeat
  from bisect import bisect
  import os
  import _random
label_desc: Use image node_id 4 for calling the SystemRandom obj's underlying member method code with example usage: obj.seed() and returns: None