12_12.py

%%time
def find_closest(dist,num,thresh):
  p1=[]
  p2=[]
  d=[]
  for i in range(num):
    for j in range(i,num):
      if( (i!=j) & (dist[i][j]<=thresh)):
        p1.append(i)
        p2.append(j)
        d.append(dist[i][j])
  return p1,p2,d