Here's how you could create custom error classes in Node.js using latest ES6 / ES2015 syntax.
I've tried to make it as lean and unobtrusive as possible.
errors/AppError.js
#!/usr/bin/env python3.6 | |
import asyncio | |
from contextlib import closing | |
import aiohttp | |
import tqdm | |
async def download(session, url, progress_queue): |
import asyncio | |
loop = asyncio.get_event_loop() | |
async def hello(): | |
await asyncio.sleep(3) | |
print('Hello!') | |
if __name__ == '__main__': | |
loop.run_until_complete(hello()) | |