Akira Li firstname.lastname@example.org writes:
Andrew Barnert via Python-ideas email@example.com writes: ...
(The fact that we don't have a term for "non-iterator iterable", and
All iterators are iterable but some iterables are not iterators.
If your code accepts only iterators then use the term *iterator*. Otherwise the term *iterable* could be used.
It is misleading to use *iterable* if your code only accepts iterators.
If an iterable is an iterator; It is called *iterator*. The term *iterable* implies that some instances are not iterators.
There are three (well, three and a half) kinds of code that consume iterables, how would you describe each simply?
1. Does not call iter, simply calls next. Therefore cannot consume a non-iterator iterable. 2. Calls iter, but can accept an iterator (e.g. only goes through it once) 3. Cannot accept an iterator (goes through it twice, or permanently stores a reference to it, etc) 4. Can accept either, but behaves differently in each case (e.g. zip when passed two of the same iterator) - this can be regarded as a special case of #2.