Fails with generator + islice

[shkarupa-alex]

Here is an example

from fast_depends import inject, Depends
from itertools import islice

def simple_dependency(a: int, b: int = 3):
    return a + b

@inject
def method(a: int, d: int = Depends(simple_dependency)) -> Generator[int, None, None]:
    yield from range(a + d)

# iterator = iter(list(method(5))) # this works
iterator = iter(method(5)) # but this is not

while batch := tuple(islice(iterator, 2)): # itertools.batched
    print(batch) # prints (1, 2) forever