Coroutine getting lost after sleep

Commencez par la méthode items de GeneratorQueryHandler du reproducteur minimal et observez son comportement pendant que vous saisissez rapidement « chunktest asdf ». Comparez le fait de dormir après le yield avec le fait de dormir avant, et suivez la manière dont l’annulation de la coroutine et ctx.isValid sont gérées. C’est terminé lorsque les cinq chunks d’items continuent tous à se remplir après un sleep post-yield sans perdre la coroutine.

I'm working on a plugin with a GeneratorQueryHandler which yields one item as a result, and then sleeps for a bit, and then fetches a result from an API and yields those items as well. So basically, it yields two chunks:

1. "Web search"
2. First 5 results of the suggestions

But I've noticed that the coroutine seems to just stop getting called sometimes. I was able to boil it down to a minimal reproducer:

import time

from albert import *

md_iid = "5.0"
md_name = "chunktest"
md_description = "testing multiple chunks of items"
md_authors = ["@brenns10"]


class Plugin(PluginInstance, GeneratorQueryHandler):

    def __init__(self):
        PluginInstance.__init__(self)
        GeneratorQueryHandler.__init__(self)

    def defaultTrigger(self):
        return "chunktest "

    def items(self, ctx):
        for i in range(5):
            if not ctx.isValid:
                info("exiting early")
                return
            info(f"yielding item {i}")
            yield [
                StandardItem(
                    id=f"item{i}",
                    text=f"Item {i}",
                    subtext="details",
                    actions=[
                        Action(
                            id="act",
                            text="Open Google",
                            callable=lambda: runTerminal("echo hi"),
                        )
                    ],
                )
            ]
            time.sleep(0.1)
            info("finished sleeping")
        info("done")

When I load this plugin, and then type "chunktest asdf" (type really fast), I only get "Item 0", and the logs look like this:

17:25:52 [info:albert.python.chunktest] yielding item 0
17:25:52 [warn:albert.wbm] Item retured null icon: python.chunktest.item0
17:25:52 [info:albert.python.chunktest] yielding item 0
17:25:52 [info:albert.python.chunktest] yielding item 0
17:25:52 [info:albert.python.chunktest] finished sleeping
17:25:52 [info:albert.python.chunktest] yielding item 1
17:25:52 [info:albert.python.chunktest] yielding item 0
17:25:52 [info:albert.python.chunktest] yielding item 0
17:25:52 [info:albert.python.chunktest] yielding item 0
17:25:52 [info:albert.python.chunktest] yielding item 0
17:25:52 [info:albert.python.chunktest] yielding item 0
17:25:53 [info:albert.python.chunktest] yielding item 0
17:25:53 [info:albert.python.chunktest] yielding item 0

The remaining 4 items never get populated. Here is a video that shows what I mean.

However, if you go ahead and move the time.sleep() call just before the yield statement, rather than after it, you'll get the behavior I expect. That is, the results keep getting replaced each time I type a new keystroke, and they slowly populate whenever I pause. Here's the video of this behavior.

It seems to me like there's something going on with this time.sleep() call directly after the yield. I notice I never see the "exiting early" message logged, which may or may not be related.