code: def test_valid(self):
      class T:
          ä = 1
          µ = 2  # this is a compatibility character
          蟒 = 3
          x󠄀 = 4
  
      self.assertEqual(getattr(T, "\xe4"), 1)
      self.assertEqual(getattr(T, "\u03bc"), 2)
      self.assertEqual(getattr(T, "\u87d2"), 3)
      self.assertEqual(getattr(T, "x\U000E0100"), 4)
  
imports: import unittest
label_desc: Use image node_id 1 for calling the PEP3131Test obj's underlying member method code with example usage: obj.test_valid() without return types