Fix an issue introduced with hetero tuple decode (#493)

dataclasses_json/core.py

@@ -389,7 +389,13 @@ def handle_pep0673(pre_0673_hint: str) -> Union[Type, str]:
  type_args = handle_pep0673(type_args)
 
  if _isinstance_safe(type_args, Collection) and not _issubclass_safe(type_args, Enum):
- return list(_decode_item(type_arg, x) for type_arg, x in zip(type_args, xs))
+ if len(type_args) == len(xs):
+ return list(_decode_item(type_arg, x) for type_arg, x in zip(type_args, xs))
+ else:
+ raise TypeError(f"Number of types specified in the collection type {str(type_args)} "
+ f"does not match number of elements in the collection. In case you are working with tuples"
+ f"take a look at this document "
+ f"docs.python.org/3/library/typing.html#annotating-tuples.")
  return list(_decode_item(type_args, x) for x in xs)