Code ReviewAdvanced~20 min

Review: Asynchronous Processing Issues

pythonasyncasyncioconcurrencyawait

Code Review Task

Please review the following Python code.

Background

This code is a system that asynchronously fetches and processes data from multiple APIs. It uses asyncio/await to achieve concurrent processing.

Review Criteria

Missing await
Event loop handling
Async context managers
Exception handling

Your Answer

async_api.pypython

import asyncio
import aiohttp
 
async def fetch_multiple_apis(urls):
    """Fetch data from multiple APIs"""
    results = await asyncio.gather(*[fetch_data(url) for url in urls])
    return results
 
def fetch_data(url):
    """Fetch data from a single API"""
    return fetch_api(url)
 
async def fetch_api(url):
    """Actual API call"""
    with aiohttp.ClientSession() as session:
        response = session.get(url)
        data = response.json()
        return data
 
async def process_results(results):
    """Process API results"""
    processed = []
    for data in results:
        result = process_data(data)
        processed.append(result)
    return processed
 
async def process_data(data):
    """Process single data item"""
    return {"processed": data}

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