code: def test_abs(self):
      nums = [
          complex(x / 3.0, y / 7.0)
          for x in range(-9, 9)
          for y in range(-9, 9)
      ]
      for num in nums:
          self.assertAlmostEqual(
              (num.real**2 + num.imag**2) ** 0.5, abs(num)
          )
  
imports: import unittest
  import sys
  from test import support
  from test.test_grammar import VALID_UNDERSCORE_LITERALS, INVALID_UNDERSCORE_LITERALS
  from random import random
  from math import atan2, isnan, copysign
  import operator
label_desc: Use image node_id 29 for calling the ComplexTest obj's underlying member method code with example usage: obj.test_abs() without return types