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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 validate_start_end_range(range_tuple):
 """ Perform basic sanity checks on a timeframe. Args: range_tuple (tuple):
 ``(start, end)`` tuple as returned by ``complete_timeframe``. Raises: ValueError: If start > end. Returns: tuple: ``(start, end)`` tuple that passed validation. Note: ``timeframes`` may be incomplete, especially if ``complete_timeframe(partial=True)`` has been used to construct them. """


    start, end = range_tuple

    if (start and end) and (start > end):
        raise ValueError(_("Start after end!"))

    return range_tuple