code: def symnormal(p=10):
      M = np.random.standard_normal((p, p))
      return (M + M.T) / np.sqrt(2)
  
imports: from itertools import combinations
  import numpy
  import numpy.linalg
  import pytest
  from numpy.testing import assert_almost_equal, assert_array_equal
  from ..None import intvol
label_desc: Use image node_id 1 for calling a global function with example usage: symnormal(p) and returns: unknown