def test_lex_expression_symbols():
 objs = tokenize('(foo bar)')
 assert (objs == [HyExpression([HySymbol('foo'), HySymbol('bar')])])

def test_lex_expression_symbols ( ) : objs = tokenize ( '(foo bar)' ) assert ( objs == [ HyExpression ( [ HySymbol ( 'foo' ) , HySymbol ( 'bar' ) ] ) ] )
make sure that expressions produce symbols .