code: def test_MatrixSymbol():
      """Test printing a MatrixSymbol to a theano variable."""
      XX = theano_code_(X)
      assert isinstance(XX, tt.TensorVariable)
      assert XX.broadcastable == (False, False)
  
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 8 for calling a global function with example usage: test_MatrixSymbol() without return types