diff --git a/Python/ceval.c b/Python/ceval.c index d5260951610..36e9b8c8eb6 100644 --- a/Python/ceval.c +++ b/Python/ceval.c @@ -2529,6 +2529,9 @@ call_function(func, arg, kw) return result; } +#define SLICE_ERROR_MSG \ + "standard sequence type does not support step size other than one" + static object * apply_subscript(v, w) object *v, *w; @@ -2543,8 +2546,13 @@ apply_subscript(v, w) } else { int i; - if (!is_intobject(w)) { - err_setstr(TypeError, "sequence subscript not int"); + if (!is_intobject(w)) { + if (PySlice_Check(w)) { + err_setstr(ValueError, SLICE_ERROR_MSG); + } else { + err_setstr(TypeError, + "sequence subscript not int"); + } return NULL; } i = getintvalue(w);