abc for generators?

[Carl Banks]

On May 19, 8:42 am, Alan Franzoni <doesnotex... at franzoni.invalid>
wrote:
> Hello,
> I was looking for an ABC for generators in python. While there's a
> types.GeneratorType type object - which can't be used directly  and it's
> not an abc - and many collections-related ABCs in the collections
> module, there's no way to say a user-defined class as a generator, even
> though it could expose the very same interface as a builtin, yield-based
> generator.
>
> I think it would be pretty useful.
>
> comments?

collections.Iterator


You don't actually need abc's to write custom iterators, BTW, the
following is an iterator for instance.

class Noise:
    def __iter__(self):
        return self
    def __next__(self):
        return random.random()


which is equivalent to the generator


def Noise():
    while True:
        yield random.random()


Carl Banks