Question

python 3:

Write a program to prompt the user for a word and a number. Add that word and number to a dictionary. If the word already exists in the dictionary, print "already entered". When the user types the word list, display all entered words and numbers from the dictionary. When the user types end, end the program.

Answer 1

IDE Used: Pycharm

Python version: Python 3.7.4

Note: All variable names are used in such a way for better understanding. It can be changed according to the user's choice. Comments are given in bold and italic. Please refer to code snippets for a better understanding of indentation.

Program code

# menu choice of the program
print("Enter\n'add' to insert \n'list' to show all values \n'end' to stop")

# to store user choice
user_ch = "Null"

# creating empty dictionary
samp_dict = {}

# continue while loop
# until user choice is end
while user_ch != "end" :

    # asking user to enter choice
    user_ch = input("Choice : ")

    # if choice is add
    if user_ch == "add" :

        # then get the input word and number
        inp_word = input("Word : ")
        inp_num = int(input("Number : "))

        # checking if already entered
        if inp_word in samp_dict:
            print("Already Entered!")

        # if not
        else:
            # inserting in dictionary
            samp_dict[inp_word] = inp_num

    # if user choice is list
    elif user_ch == "list":

        # display all the values
        for inp_word in samp_dict:
            print(inp_word,samp_dict[inp_word])

    # if choice end then quit
    elif user_ch == "end":
        print("Quiting...")

Code Snippets

Sample output run