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Example implementations of context managers
import asyncio
from typing import Callable
class ScopedActions(object):
startup: Callable[[], None]
cleanup: Callable[[], None]
name: str
def __init__(self, name: str, startup: Callable[[], None], cleanup: Callable[[], None]):
self.name = name
self.startup = startup
self.cleanup = cleanup
async def __aenter__(self):
await asyncio.sleep(1)
self.startup()
return self
async def __aexit__(self, type, value, traceback):
await asyncio.sleep(1)
self.cleanup()
async def test():
async with ScopedActions(name='test', startup=lambda: print('started'),
cleanup=lambda: print('finished')) as scoped:
print('Executing:', scoped.name)
loop = asyncio.new_event_loop()
result = loop.run_until_complete(test())
import asyncio
from contextlib import asynccontextmanager
from typing import Callable
@asynccontextmanager
async def scoped_actions(name: str, startup: Callable[[], None], cleanup: Callable[[], None]):
startup()
await asyncio.sleep(1)
yield name
cleanup()
async def test():
async with scoped_actions(name='test', startup=lambda: print('started'), cleanup=lambda: print('finished')) as name:
print('Executing:', name)
loop = asyncio.new_event_loop()
result = loop.run_until_complete(test())
from typing import Callable
class ScopedActions(object):
startup: Callable[[], None]
cleanup: Callable[[], None]
name: str
def __init__(self, name: str, startup: Callable[[], None], cleanup: Callable[[], None]):
self.name = name
self.startup = startup
self.cleanup = cleanup
def __enter__(self):
self.startup()
return self
def __exit__(self, type, value, traceback):
self.cleanup()
with ScopedActions(name='test', startup=lambda: print('started'), cleanup=lambda: print('finished')) as scoped:
print('Executing:', scoped.name)
from contextlib import contextmanager
from typing import Callable
@contextmanager
def scoped_actions(name: str, startup: Callable[[], None], cleanup: Callable[[], None]):
startup()
yield name
cleanup()
with scoped_actions(name='test', startup=lambda: print('started'), cleanup=lambda: print('finished')) as name:
print('Executing:', name)
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