Errors hidden when invoking Pyscript from native code

[dmamelin]

I’ve been noticing odd issues when using native calls for a while, but now I have a simple reproducer:

@pyscript_compile
def test_native(log):
    async def native(callback):
        log("native start")
        res = await callback()
        log(f"native callback result {res}")
        return res

    return native

def callback_func():
    res = 0 / 0
   return res

def test_exception():
    log.info("start")
    try:
        test_native(log.info)(callback_func)
        log.info("no exception")
    except Exception as e:
        log.info(f"got exception {e}")
    log.info("end")

@time_trigger("once(now+3s)")
def start():
    log.info("start time_trigger")
    test_exception()
    log.info("stop time_trigger")

test_exception()

Output:

start
native start
native callback result None <-----
got exception division by zero
end
#3 sec
start time_trigger
start
native start
native callback result None <-----
no exception
end
stop time_trigger

With a direct call, the exception is raised, but note line native callback result None - it shouldn’t be there.
When called via a trigger - the exception is swallowed complete