code: def edge_pair_input(sort=False):
      if sort:
          src = [
              0,
              0,
              0,
              1,
              1,
              2,
              2,
              3,
              3,
              4,
              4,
              4,
              4,
              5,
              5,
              6,
              7,
              7,
              7,
              9,
          ]
          dst = [
              4,
              6,
              9,
              3,
              5,
              3,
              7,
              5,
              8,
              1,
              3,
              4,
              9,
              1,
              9,
              6,
              2,
              8,
              9,
              2,
          ]
          return src, dst
      else:
          src = [
              0,
              0,
              4,
              5,
              0,
              4,
              7,
              4,
              4,
              3,
              2,
              7,
              7,
              5,
              3,
              2,
              1,
              9,
              6,
              1,
          ]
          dst = [
              9,
              6,
              3,
              9,
              4,
              4,
              9,
              9,
              1,
              8,
              3,
              2,
              8,
              1,
              5,
              7,
              3,
              2,
              6,
              5,
          ]
          return src, dst
  
imports: import math
  import numbers
  import backend
  import dgl
  import networkx
  import numpy
  import pytest
  import scipy.sparse
  from dgl import DGLError
label_desc: Use image node_id 1 for calling a global function with example usage: edge_pair_input(sort) and returns: src,  dst, src,  dst