async def getKwargs(kwargs):
kwargsTasks = [
arg.map(lambda x: (ith, x))
if isinstance(arg, Awaitable) else Promise.insert((ith, arg))
for ith, arg in kwargs.items()
]
return dict(await asyncio.gather(*kwargsTasks))
async def main():
x = Promise.insert(1).map(fakeComputation)
y = Promise.insert(2).map(fakeComputation)
z = Promise.insert(3).map(fakeComputation)
# z = add(x, y)
# promiseSum = add(x, y, z)
promiseSum = my_func(x, y=1, z=z)
final_result = promiseSum.map(fakeComputation)
print(
"Here we have instantiated the computation, but we have not done anything"
)
value = await final_result
print(value)
def dbl(value):
return Promise(lambda resolve, reject: resolve(2 * value))
def dec(value):
return Promise(lambda resolve, reject: resolve(value - 1))
def inc(value):
return Promise(lambda resolve, reject: resolve(value + 1))
def test_catch(self):
p = _run(
Promise(lambda resolve, reject: reject(IndexError())).catch(
lambda error: 0))
self.assertEqual(p, 0)
def test_insert(self):
self.assertEqual(_run(Promise.insert(0)), 0)
def pipeline(steps, value) -> _Promise[Either]:
promise = Promise.insert(Right(value))
return reduce(lambda either, step: either.then(lambda x: x.bind(step)), steps, promise)
async def getArgs(args):
return await asyncio.gather(*[
arg if isinstance(arg, Awaitable) else Promise.insert(arg)
for arg in args
])
def pipeline(steps, value) -> _Promise[Either]:
return reduce(lambda promise, step: promise.then(step), steps, Promise.insert(value))\
.map(lambda x: Right(x)).catch(errorHandling)