asyncio.TimeoutError: Operation Timed Out

Why This Happens

asyncio.wait_for() raises TimeoutError when an operation takes too long. This prevents indefinite waits but needs to be handled gracefully.

The Problem

async def main():
    result = await asyncio.wait_for(slow_op(), timeout=1.0)

The Fix

async def main():
    try:
        result = await asyncio.wait_for(slow_op(), timeout=1.0)
    except asyncio.TimeoutError:
        print('Timed out, using fallback')
        result = 'default'

Step-by-Step Fix

1. 1

   Handle the timeout

   Wrap in try/except asyncio.TimeoutError.

2. 2

   Increase timeout

   If the operation legitimately takes longer, increase the value.

3. 3

   Investigate slow operations

   Profile to find why the operation is slow.