add __setattr__

src/runtime/objects/dictionary/dictionary.c

@@ -139,7 +139,7 @@ ArgonObject *create_ARGON_DICTIONARY_TYPE___get_attr__(size_t argc,
   ArgonObject *result = hashmap_lookup_GC(object->value.as_hashmap, hash);
   if (!result) {
     *err = create_err(0, 0, 0, NULL, "Attribute Error",
-                      "Dictionary has no attribute ''");
+                      "Dictionary has no attribute '%.*s'", key->value.as_str->length, key->value.as_str->data);
     return ARGON_NULL;
   }
   return result;

src/runtime/objects/number/number.c

@@ -532,7 +532,7 @@ void create_ARGON_NUMBER_TYPE() {
   add_builtin_field(ARGON_NUMBER_TYPE, __multiply__,
                     create_argon_native_function(
                         "__multiply__", ARGON_NUMBER_TYPE___multiply__));
-  add_builtin_field(ARGON_NUMBER_TYPE, __division__,
+  add_builtin_field(ARGON_NUMBER_TYPE, __divide__,
                     create_argon_native_function(
                         "__division__", ARGON_NUMBER_TYPE___division__));
   init_small_ints();

src/runtime/objects/object.c

@@ -39,7 +39,7 @@ const char *built_in_field_names[BUILT_IN_FIELDS_COUNT] = {
     "__string__",
     "__subtract__",
     "__multiply__",
-    "__division__",
+    "__divide__",
     "__new__",
     "__init__",
     "__boolean__",