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