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srh merged 1 commit into from
Oct 10, 2023
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Update README asyncio example #302

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47 changes: 23 additions & 24 deletions README.md
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Expand Up @@ -57,36 +57,35 @@ for hero in marvel_heroes.run(connection):
```

### Asyncio mode
Asyncio mode is compatible with Python ≥ 3.4, which is when asyncio was
introduced into the standard library.
Asyncio mode is compatible with Python ≥ 3.5.

```python
import asyncio
from rethinkdb import r

# Native coroutines are supported in Python ≥ 3.5. In Python 3.4, you should
# use the @asyncio.couroutine decorator instead of "async def", and "yield from"
# instead of "await".
async def main():
r.set_loop_type('asyncio')
connection = await r.connect(db='test')

await r.table_create('marvel').run(connection)

marvel_heroes = r.table('marvel')
await marvel_heroes.insert({
'id': 1,
'name': 'Iron Man',
'first_appearance': 'Tales of Suspense #39'
}).run(connection)

# "async for" is supported in Python ≥ 3.6. In earlier versions, you should
# call "await cursor.next()" in a loop.
cursor = await marvel_heroes.run(connection)
async for hero in cursor:
print(hero['name'])

asyncio.get_event_loop().run_until_complete(main())
async with await r.connect(db='test') as connection:
await r.table_create('marvel').run(connection)

marvel_heroes = r.table('marvel')
await marvel_heroes.insert({
'id': 1,
'name': 'Iron Man',
'first_appearance': 'Tales of Suspense #39'
}).run(connection)

# "async for" is supported in Python ≥ 3.6. In earlier versions, you should
# call "await cursor.next()" in a loop.
cursor = await marvel_heroes.run(connection)
async for hero in cursor:
print(hero['name'])
# The `with` block performs `await connection.close(noreply_wait=False)`.

r.set_loop_type('asyncio')

# "asyncio.run" was added in Python 3.7. In earlier versions, you
# might try asyncio.get_event_loop().run_until_complete(main()).
asyncio.run(main())
```

### Gevent mode
Expand Down