take user input and fill the key as Interger and values as String and then create the dictionary ? How to reverse a dictionary ? How to delete a key from a dictionary ? How do you add given key-value pair to dictionary if and only if it is not present in the dictionary? How do you retrieve a value associated with a given key from the dictionary? How do you find out the number of key-value dictionarypings present in a dictionary? How do you remove all key-value pairs from a dictionary? OR How do you clear the dictionary for reuse? How do you retrieve all keys and values present in a dictionary? How do you remove a key-value pair from the dictionary? How do you replace a value associated with a given key in the dictionary?