code: def q(self, u, v):
      # remaining degree probability
      norm = max(self.remaining_degree.values()) ** 2
      return self.remaining_degree[u] * self.remaining_degree[v] / norm
  
imports: import heapq
  import math
  from itertools import chain, combinations, zip_longest
  from operator import itemgetter
  import networkx
  from networkx.utils import py_random_state, random_weighted_sample
label_desc: Use image node_id 5 for calling the DegreeSequenceRandomGraph obj's underlying member method code with example usage: obj.q(u, v) and returns: unknown