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Question: "How do I use async/await in Python?"
Response:
async/await in Python allows you to write asynchronous code that looks synchronous, making it easier to handle I/O-bound operations.
import asyncio
async def fetch_data():
print("Start fetching...")
await asyncio.sleep(2) # Simulates I/O operation
print("Done fetching!")
return {"data": "result"}
async def main():
result = await fetch_data()
print(result)
# Run the async function
asyncio.run(main())
import aiohttp
import asyncio
async def fetch_url(session, url):
async with session.get(url) as response:
return await response.text()
async def fetch_multiple():
urls = [
'https://api.example.com/users',
'https://api.example.com/posts',
'https://api.example.com/comments'
]
async with aiohttp.ClientSession() as session:
tasks = [fetch_url(session, url) for url in urls]
results = await asyncio.gather(*tasks)
return results
async/await for I/O-bound operations (network, file)asyncio.gather() for concurrent operationsIf documentation is confusing:
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