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# test waiting within async with enter/exit functions
import sys
if sys.implementation.name == 'micropython':
# uPy allows normal generators to be awaitables
coroutine = lambda f: f
else:
import types
coroutine = types.coroutine
@coroutine
def f(x):
print('f start:', x)
yield x + 1
yield x + 2
return x + 3
class AContext:
async def __aenter__(self):
print('enter')
print('f returned:', await f(10))
async def __aexit__(self, exc_type, exc, tb):
print('exit', exc_type, exc)
print('f returned:', await f(20))
async def coro():
async with AContext():
print('body start')
print('body f returned:', await f(30))
print('body end')
o = coro()
try:
while True:
print('coro yielded:', o.send(None))
except StopIteration:
print('finished')
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