import asyncio

def page_ids(total):
    for i in range(total):
        if i == 100:
            print(asyncio.format_call_graph())
            return
        yield i

def collect():
    return list(page_ids(250))

async def fetch():
    return collect()

async def main():
    print('got', len(await fetch()), 'ids')

asyncio.run(main())

* Task(name='Task-1', id=0x103f78b90)
  + Call stack:
  |   File '/Users/timofeiivankov/cpython/repro.py', line 6, in generator page_ids()

* Task(name='Task-1', id=0x103cd4b90)
  + Call stack:
  |   File '/Users/timofeiivankov/cpython/repro.py', line 6, in generator page_ids()
  |   File '/Users/timofeiivankov/cpython/repro.py', line 11, in collect()
  |   File '/Users/timofeiivankov/cpython/repro.py', line 14, in async fetch()
  |   File '/Users/timofeiivankov/cpython/repro.py', line 17, in async main()