Function _log_on_exception

Lib/asyncio/tasks.py:911–927

(fut)

def _log_on_exception(fut):
    if fut.cancelled():
        return

    exc = fut.exception()
    if exc is None:
        return

    context = {
        'message':
        f'{exc.__class__.__name__} exception in shielded future',
        'exception': exc,
        'future': fut,
    }
    if fut._source_traceback:
        context['source_traceback'] = fut._source_traceback
    fut._loop.call_exception_handler(context)


def shield(arg):