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Title: Implement minimal builtins.anext() by YashSuthar983 · Pull Request #6226 · RustPython/RustPython · GitHub

Open Graph Title: Implement minimal builtins.anext() by YashSuthar983 · Pull Request #6226 · RustPython/RustPython

X Title: Implement minimal builtins.anext() by YashSuthar983 · Pull Request #6226 · RustPython/RustPython

Description: issue : #3609 Currently passes import builtins import asyncio async def agen(): for i in range(3): yield i async def main(): aiter = agen() val1 = await builtins.anext(aiter) print("val1:", val1) val2 = await builtins.anext(aiter) print("val2:", val2) val3 = await builtins.anext(aiter, "done") print("val3:", val3) asyncio.run(main()) Failed case ,need PyAnextAwaitable import asyncio async def simple_test(): async def agen(): yield 1 aiter = agen() print(f"First value: {await anext(aiter)}") # EXPECTED: Should return "no more values" result = await anext(aiter, "no more values") print(f"Second value: {result}") if __name__ == "__main__": asyncio.run(simple_test()) #Cpython First value: 1 Second value: no more values #RustPython Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s Running `target/debug/rustpython /home/yash/test_anext_simple.py` First value: 1 Traceback (most recent call last): File "/home/yash/test_anext_simple.py", line 22, in asyncio.run(simple_test()) File "/home/yash/contri/RustPython/pylib/Lib/asyncio/runners.py", line 193, in run with Runner(debug=debug, loop_factory=loop_factory) as runner: File "/home/yash/contri/RustPython/pylib/Lib/asyncio/runners.py", line 194, in run return runner.run(main) File "/home/yash/contri/RustPython/pylib/Lib/asyncio/runners.py", line 129, in run signal.signal(signal.SIGINT, signal.default_int_handler) File "/home/yash/contri/RustPython/pylib/Lib/asyncio/runners.py", line 124, in run raise # CancelledError File "/home/yash/contri/RustPython/pylib/Lib/asyncio/runners.py", line 118, in run return self._loop.run_until_complete(task) File "/home/yash/contri/RustPython/pylib/Lib/asyncio/base_events.py", line 687, in run_until_complete return future.result() File "/home/yash/contri/RustPython/pylib/Lib/asyncio/futures.py", line 203, in result raise self._exception.with_traceback(self._exception_tb) File "/home/yash/contri/RustPython/pylib/Lib/asyncio/tasks.py", line 314, in __step_run_and_handle_result result = coro.send(None) File "/home/yash/test_anext_simple.py", line 18, in simple_test result = await anext(aiter, "no more values") StopAsyncIteration Summary by CodeRabbit New Features Added anext builtin function to retrieve the next item from asynchronous iterators with optional default value support.

Open Graph Description: issue : #3609 Currently passes import builtins import asyncio async def agen(): for i in range(3): yield i async def main(): aiter = agen() val1 = await builtins.anext(aiter) ...

X Description: issue : #3609 Currently passes import builtins import asyncio async def agen(): for i in range(3): yield i async def main(): aiter = agen() val1 = await builtins.anext(aiter) ...

Opengraph URL: https://github.com/RustPython/RustPython/pull/6226

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