def _check_broadcast_up_to(arr_from, shape_to, name):
 shape_from = arr_from.shape
 if (len(shape_to) >= len(shape_from)):
  for (t, f) in zip(shape_to[::(-1)], shape_from[::(-1)]):
   if ((f != 1) and (f != t)):
    break
  else:
   if ((arr_from.size != 1) and (arr_from.shape != shape_to)):
    arr_from = (np.ones(shape_to, arr_from.dtype) * arr_from)
   return arr_from.ravel()
 raise ValueError(('%s argument must be able to broadcast up to shape %s but had shape %s' % (name, shape_to, shape_from)))

def _check_broadcast_up_to ( arr_from , shape_to , name ) : shape_from = arr_from . shape if ( len ( shape_to ) >= len ( shape_from ) ) : for ( t , f ) in zip ( shape_to [ : : ( - 1 ) ] , shape_from [ : : ( - 1 ) ] ) : if ( ( f != 1 ) and ( f != t ) ) : break else : if ( ( arr_from . size != 1 ) and ( arr_from . shape != shape_to ) ) : arr_from = ( np . ones ( shape_to , arr_from . dtype ) * arr_from ) return arr_from . ravel ( ) raise ValueError ( ( '%s argument must be able to broadcast up to shape %s but had shape %s' % ( name , shape_to , shape_from ) ) )
helper to check that arr_from broadcasts up to shape_to .