def line(value):
    """
    | Line which can be used to cross with functions like RSI or MACD.
    | Name: line\_\ **value**\ 

    :param value: Value of the line
    :type value: float
    """
    def return_function(data):
        column_name = f'line_{value}'
        if column_name not in data.columns:
            data[column_name] = value
        return data[column_name].copy()

    return return_function