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40ad8f1666
This is consistent with the other 'micro' modules and allows implementing additional features in Python via e.g. micropython-lib's sys. Note this is a breaking change (not backwards compatible) for ports which do not enable weak links, as "import sys" must now be replaced with "import usys".
51 lines
1.0 KiB
Python
51 lines
1.0 KiB
Python
# test waiting within "async for" __anext__ function
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try:
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import usys as sys
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except ImportError:
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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 ARange:
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def __init__(self, high):
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print('init')
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self.cur = 0
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self.high = high
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def __aiter__(self):
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print('aiter')
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return self
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async def __anext__(self):
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print('anext')
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print('f returned:', await f(20))
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if self.cur < self.high:
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val = self.cur
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self.cur += 1
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return val
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else:
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raise StopAsyncIteration
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async def coro():
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async for x in ARange(4):
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print('x', x)
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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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