code: def test_cmp_bug1():
      class T:
          pass
  
      t = T()
      x = Symbol("x")
  
      assert not (x == t)
      assert x != t
  
file_path: sympy/sympy/core/tests/test_equal.py
imports: from sympy.core.numbers import Rational
  from sympy.core.symbol import Dummy, Symbol
  from sympy.functions.elementary.exponential import exp
label_desc: Use image node_id 3 for calling a global function with example usage: test_cmp_bug1() without return types