Question

Python. Please attach python file if possible. All Instructions given:
General The program must allow a trader to enter in stock's symbol, its current price, and a lucky number (see the validation rules for these inputs below). The program then outputs a recommendation to either buy, sell, or hold the stock. The recommendation is based on whether the current stock price is above, below, or equal to a particular threshold value specific to that stock (see more on the threshold below). Threshold calculation The threshold value is calculated according a simple formula that your boss is convinced will win every time: 1. take the average of the stock's performance over the last 4 days 2. multiply that by the lucky number from your boss's fortune cookie at lunchtime minus 1, 3. then divide the result by the same lucky number from the fortune cookie. If the current price above the resulting threshold value, the program should tell the user to sell. If the current price is below the threshold value, the program should tell the user to buy. If the equal to the threshold value, the program should instruct the user current price hold the stock. Input validation The program must include the following validation: the user must enter the dollar sign $ before the current stock price (e.g. "$75.75") the program must ignore case in the stock symbol (e.g. "WMT is treated same as "wmt") the lucky number must be any positive integer if the user enters an invalid price, stock symbol, or lucky number, the program must inform the user that the input is invalid and gracefully exit

Answer 1

# TEXT CODE:

# defining method recommendation which gives the rerecommendation
def recommendation(lucky_number, stock_symbol, current_price):
  
# create an empty dictionary which will be used to store the average value of
# performance of last for days for the corresponding valid symbol
dictionary = {}
  
  
print()
print("......calculating......")
print("......crunching........")
print("........hang on........")

# store the average
dictionary["WMT"] = (76.16 + 76.15 + 76.23 + 76.30)/4
dictionary["KO"] = (38.75 + 38.78 + 38.77 + 38.85)/4
dictionary["PG"] = (79.24 + 79.34 + 79.45 + 79.58)/4
dictionary["BRKA"] = (173396.00 + 173490.00 + 173762.00 + 173471.99)/4
dictionary["XOM"] = (87.78 + 88.72 + 87.36 + 89.58)/4
  
  
# get the average for the corresponding symbol
average = dictionary[stock_symbol.upper()]
  
# calculate threshold
threshold = (average*lucky_number - 1)/lucky_number
  
# if current price is greater than the threshold return SELL
if current_price > threshold:
return "SELL"
  
# else if current price is lesser than the threshold return SELL
elif current_price < threshold:
return "BUY"
  
# else return HOLD
else: return "HOLD"
  
  

# defining main method to get the input, validate the inputs and check the
# recommendation method
def main():
  
# print the greeting message
print("Welcome to the Lucky Fortune Trading Algorithm!")
  
  
# get the lucky_number
# check whether the input number is in valid format
try:
lucky_number = int(input("Enter the lucky number from lunch today: "))
  
except:
  
print("Please enter a valid lucky number")
return
  
# if number is negative or zero
if lucky_number <= 0:
print("Please enter a positive lucky number")
return
  
# make a list of valid symbols
stock_symbols = ["WMT", "KO", "PG", "BRKA", "XOM"]
  
# get the stock_symbol
stock_symbol = str(input("Enter the stock symbol:"))
  
# check entered stock_symbol is in the the list of valid stock_symbols
if stock_symbol.upper() not in stock_symbols:
print("Please enter valid stock symbol")
return
  
# get the current price
current_price = (input("Enter the current price:"))
  
# check whether first symbol of current_price is $ or not
if current_price[0] != '$':
print("You must enter the dollar sign $ before the current stock price")
return
  
# now check whether $ symbol follow valid number in current price
try:
current_price = float(current_price[1:])
except:
print("$ symbol should follow valid number in current price")
return
  
  
# now call recommendation method and store the result
result = recommendation(lucky_number, stock_symbol, current_price)
  
  
print()
  
if result == "BUY":
print("This stock is undervalued.")
print("BUY!")
  
elif result == "SELL":
print("This stock is overvalued.")
print("SELL!")
  
else:
print("This stock is equal to threshold.")
print("HOLD!")
  
  
# Driver program
if __name__ == "__main__":
  
# call main method
main()
  

SCREENSHOTS:

code:

defining met hod recormend ation which gives the rerecommendation 2 def recarmendation (lucky_number, stock_symbol, current_price): 1 create an empty diction ary which will be used to store the aer age value af # performance of last for days for the corresponding valid symbol dictionary {} print() rint("... . . crunching.... . . print ("...... .. hang on... . . .. . ". 12 13 # store the average dictionary["NMT"1-( 76.16 76.15 + 76.23 76. 30)/4 dictionary["KO"] = (38.75 +38.78 38.77 38.85)/4 15 16 dictionary"RRKA" 173396. 08 + 173490, 22 + 173762.28 dictionary ["xOM"] = (87.78 88.72 87.36 +89.58)/4 173471.99)/4 19 20 get the average for the corresponding symbol average dictionary [ stock_symbol.upper (O] 23 24 # calculate threshold threshold (average lucky number 1)/1ucky_number 26 27 than the threshold return SELL # it current thrasheld return "SELL 30 31 er than the threshold return SELL elif current oetce +hreshold: return "BUY" 34 35 else return HOLD else: return "HOLD" 7 38 # defining main method to get the input, validate the inputs and check the t recarmendation method 42 43 def main() : 44

#print the greeting message print ("Welcame to the Lucky Fortune Trading Algorithm ! ") 45 48 # get the lucky number heck whether the input number is in valid format ДС +ry lucky_number - int (input("Enter the lucky number from lunch today: ")) 52 5= except: print("Please enter a valid lucky number" S6 return # if number is negative or zero if lucky_number <: print("Please enter a positive lucky number") 59 60 63 #make a list of valid symbols stock_symbols = ["WMT " , "KO", "PG", "BRKA", "MON"1 64 # get the stock symbol stock_symbol = str(input("Enter the stock symbol:")) 67 66 check entered stock symbol is in the the list of valid stock symbols if stock_symbol.upper () not in stock_symbols print("Please enter vallid stock symbol") 71 return 74. # get the current price current_price =(input ("Enter the current price:")) 75 # check whether first symbol of current price is or not 78 if current_price[ 0] != '$': before the current stock price") "You must enter the dollar sign return 91 82 symbol follow valid number in current price now check whether try: current_price float(current_price [1:]) 83 85 86 except:

print (" symbal should follow valid number in current price") 87 return nON call recommend ation method and store the result result recamendation (1lucky_number, stock_symbol, current_price) print () if result "BUY": print("This stock is undervalued. " : print ("BUY!") elif result - "SELL": print ("This stock is overvalued. " ) print ("SELL!") 101 10% else: print ("This stock is equal to threshold.") print("HOLD!") 105 106 109 11 # Driver program if name == " main ": call main method main() 113 114 115 286888886882a882825829

output:

Welcome to the Lucky Fortune Trading Algorithm! Enter the lucky number from lunch today: 17 tock synbOl: W he urrent price: $75.75 E .. . . .calculating . . . . . . .. . .crunching... . . . hang on.. . .. This stock is undervalued. BUY!