28 lines
723 B
Python
28 lines
723 B
Python
# test await expression
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# uPy allows normal generators to be awaitables.
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# CircuitPython does not.
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# In CircuitPython you need to have an __await__ method on an awaitable like in CPython;
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# and like in CPython, generators do not have __await__.
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class Awaitable:
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def __init__(self, value):
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self.value = value
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def __await__(self):
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print('wait value:', self.value)
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msg = yield 'message from wait({})'.format(self.value)
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print('wait got back:', msg)
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return 10
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async def f():
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x = await Awaitable(1)**2
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print('x =', x)
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coro = f()
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print('return from send:', coro.send(None))
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try:
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coro.send('message from main')
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except StopIteration:
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print('got StopIteration')
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