Your task is to read the data from inventory.txt$.$ If there are no errors when reading the data, the program should prompt the user to provide the desired maximum ratio of unsold items on display $($call it max$\_$ratio$).$ This value should be a floating$-$point number between $0$ and $1.$ For each day$-$item pair, your program should calculate the ratio of unsold items on display. If this computed ratio is higher than the value in max$\_$ratio, your program should retain the available and computed information for this day$-$item pair.

To extract the data from inventory.txt$,$ your program should have a function named read$\_$inventory$\_$data, which takes a single parameter $$ the name of the file containing the data. This function should return a list of dictionaries. Each dictionary should contain the keys day$\_$of$\_$week, item$\_$name, unsold$\_$kg $($calculated by subtracting the purchased kilograms from the displayed kilograms$),$