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