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# test basic async for execution

# example taken from PEP0492

class AsyncIteratorWrapper:

def __init__(self, obj):

print('init')

self._it = iter(obj)

async def __aiter__(self):

print('aiter')

return self

async def __anext__(self):

print('anext')

try:

value = next(self._it)

except StopIteration:

raise StopAsyncIteration

return value

async def coro():

async for letter in AsyncIteratorWrapper('abc'):

print(letter)

o = coro()

try:

o.send(None)

except StopIteration:

print('finished')