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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 callback_liveOut_pipe_in(named_count, state_uid, **kwargs):
    'Handle something changing the value of the input pipe or the associated state uid'

    cache_key = _get_cache_key(state_uid)
    state = cache.get(cache_key)

    # If nothing in cache, prepopulate
    if not state:
        state = {}

    # Guard against missing input on startup
    if not named_count:
        named_count = {}

    # extract incoming info from the message and update the internal state
    user = named_count.get('user', None)
    click_colour = named_count.get('click_colour', None)
    click_timestamp = named_count.get('click_timestamp', 0)

    if click_colour:
        colour_set = state.get(click_colour, None)

        if not colour_set:
            colour_set = [(None, 0, 100) for i in range(5)]

        _, last_ts, prev = colour_set[-1]

        # Loop over all existing timestamps and find the latest one
        if not click_timestamp or click_timestamp < 1:
            click_timestamp = 0

            for _, the_colour_set in state.items():
                _, lts, _ = the_colour_set[-1]
                if lts > click_timestamp:
                    click_timestamp = lts

            click_timestamp = click_timestamp + 1000

        if click_timestamp > last_ts:
            colour_set.append((user, click_timestamp, prev * random.lognormvariate(0.0, 0.1)),)
            colour_set = colour_set[-100:]

        state[click_colour] = colour_set
        cache.set(cache_key, state, 3600)

    return "(%s,%s)" % (cache_key, click_timestamp)