def split_data(par):
    """
        Splits the key and the value (in case they were indicated
            from the user in the command-line, to be used in POSTs).
        We had:     par = "key=value";
        We are returned:    couple = ["key", "value"].

        Args:
            par       -- parameters to be split

        Returns:
            couple      -- list of two separated elements (key and value)

    """
    couple = par.split('=')
    return [couple[0], couple[1]]