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duality-group
duality-group / motor python
Repository URL to install this package:
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Version:
2.5.1 ▾
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# These comments let tutorial-asyncio.rst include this code in sections.
# -- setup-start --
import asyncio
from aiohttp import web
from motor.motor_asyncio import AsyncIOMotorClient
async def setup_db():
db = AsyncIOMotorClient().test
await db.pages.drop()
html = '<html><body>{}</body></html>'
await db.pages.insert_one({'_id': 'page-one',
'body': html.format('Hello!')})
await db.pages.insert_one({'_id': 'page-two',
'body': html.format('Goodbye.')})
return db
# -- setup-end --
# -- handler-start --
async def page_handler(request):
# If the visitor gets "/pages/page-one", then page_name is "page-one".
page_name = request.match_info.get('page_name')
# Retrieve the long-lived database handle.
db = request.app['db']
# Find the page by its unique id.
document = await db.pages.find_one(page_name)
if not document:
return web.HTTPNotFound(text='No page named {!r}'.format(page_name))
return web.Response(body=document['body'].encode(),
content_type='text/html')
# -- handler-end --
# -- main-start --
loop = asyncio.get_event_loop()
db = loop.run_until_complete(setup_db())
app = web.Application()
app['db'] = db
# Route requests to the page_handler() coroutine.
app.router.add_get('/pages/{page_name}', page_handler)
web.run_app(app)
# -- main-end --