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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def dropwhile(coro, iterable, loop=None):
 """ Make an iterator that drops elements from the iterable as long as the predicate is true; afterwards, returns every element. Note, the iterator does not produce any output until the predicate first becomes false, so it may have a lengthy start-up time. This function is pretty much equivalent to Python standard `itertools.dropwhile()`, but designed to be used with async coroutines. This function is a coroutine. This function can be composed in a pipeline chain with ``|`` operator. Arguments: coro (coroutine function):
 coroutine function to call with values to reduce. iterable (iterable|asynchronousiterable):
 an iterable collection yielding coroutines functions. loop (asyncio.BaseEventLoop):
 optional event loop to use. Raises: TypeError: if coro argument is not a coroutine function. Returns: filtered values (list):
 ordered list of resultant values. Usage:: async def filter(num):
 return num < 4 await paco.dropwhile(filter, [1, 2, 3, 4, 5, 1]) # => [4, 5, 1] """

    drop = False

    @asyncio.coroutine
    def assert_fn(element):
        nonlocal drop

        if element and not drop:
            return False

        if not element and not drop:
            drop = True

        return True if drop else element

    @asyncio.coroutine
    def filter_fn(element):
        return (yield from coro(element))

    return (yield from filter(filter_fn, iterable,
                              assert_fn=assert_fn, limit=1, loop=loop))