Assignment
This assignment is to write a program in Python to allow a user to (A)dd, (D)elete, (L)ist and (Q)uit a program you write to maintain and update a {dictionary} of stock prices. When the program starts, it should display "(A)dd, (D)elete, (L)ist, (Q)uit" and allow you to A, D or L until you hit Q--at which point the program should exit.
Solution:
import stockquotes
stocks = dict()
def add():
print("What stock wanted to add? ")
symbol = input().upper()
#Check to see if the stock exists
if symbol in stocks:
#If it does, then update the price
stocks[symbol] = stockquotes.Stock(symbol).current_price
else:
#If it does not, then add the SYMbol (upper case) to the {dict} along with the current_price
stocks[symbol] = stockquotes.Stock(symbol).current_price
def delete():
print("What stock wanted to delete?")
symbol = input().upper()
#First check to see if the stock exists
if symbol in stocks:
#If it does, delete it (using del or .pop -- your choice)
stocks.pop(symbol)
else:
#If it does not, inform the user that the symbol was not in the {dict}
print("The provided symbol was not found in the stock list")
def listing():
#Iterate over the list and print(SYMbol, price)
#Make sure your list is sorted
for i in sorted (stocks) :
print ((i, stocks[i]), end =" ")
print("\n")
def menu():
print("(A)dd, (D)elete, (L)ist, (Q)uit")
choice = input().lower()
if choice == 'a':
#(A)dding a stock to the list
add()
elif choice == 'd':
#(D)eleting a stock
delete()
elif choice == 'l':
#(L)isting the stocks
listing()
elif choice == 'q':
#(Q)uit and exit the program.
return
else:
print("Invalid request")
#Recursively run the menu
menu()
menu()