[Python] Is there a generic python iterator other than iter()?

I wrote this generic iterator generator function because I haven't seen anything like it:

def genericIterator(item, next):
while item:
yield item
item=next(item)


I use it for iterating over not-real-collections from C bindings, like this:

for item in genericIterator(thing.newest_item(), lambda i: i.older()):
print(f"Another one to checkout, brains: {item.name}")


I am surprised that I can't find a built-in iterator helper that takes an initial item, plus a means to get the next item from that. iter() does not do it.

Have I missed anything (maybe apart from the bad form of naming the 2nd parameter next)?

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