@pytest.fixture(scope='module')
def strcat_sym():
 ds = dshape('3 * {name: string, comment: string, num: int32}')
 s = symbol('s', dshape=ds)
 return s

@ pytest . fixture ( scope = 'module' ) def strcat_sym ( ) : ds = dshape ( '3 * {name: string, comment: string, num: int32}' ) s = symbol ( 's' , dshape = ds ) return s
blaze symbol used to test exceptions raised by cat() .