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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 id_generator(start=0):
 """ Generator for sequential numeric numbers. """

    count = start
    while True:
        send_value = (yield count)
        if not send_value is None:
            if send_value < count:
                raise ValueError('Values from ID generator must increase '
                                 'monotonically (current value: %d; value '
                                 'sent to generator: %d).'
                                 % (count, send_value))
            count = send_value
        else:
            count += 1