code: def test_many():
      """Test printing a complex expression with multiple symbols."""
      expr = sy.exp(x**2 + sy.cos(y)) * sy.log(2 * z)
      comp = theano_code_(expr)
      expected = tt.exp(xt**2 + tt.cos(yt)) * tt.log(2 * zt)
      assert theq(comp, expected)
  
imports: import logging
  from sympy.external import import_module
  from sympy.testing.pytest import raises, SKIP, warns_deprecated_sympy
  import sympy
  from sympy.core.singleton import S
  from sympy.abc import x, y, z, t
  from sympy.printing.theanocode import theano_code, dim_handling, theano_function
label_desc: Use image node_id 13 for calling a global function with example usage: test_many() without return types