code: def test_as_theano_expression_fails():
      from lasagne.utils import as_theano_expression
  
      with pytest.raises(TypeError):
          as_theano_expression({})
  
imports: from mock import Mock
  import pytest
  import numpy
  import theano
  import theano.tensor
label_desc: Use image node_id 3 for calling a global function with example usage: test_as_theano_expression_fails() without return types