How can I complete my code (stock_market.py) ?

Instruction

getStock() function

The code includes a function getStock(). It takes (as aparameter) the symbol for a stock, and calls requests.get() with arequest for prices of the specified stock from the AlphaVantageAPI. This function is complete except it needs an API key. Copyyour AlphaVantage API key into the getStock() function whereindicated. (Note: Your key must be inside the quotes.) Other thanadding your API key, do not edit the getStock()function.

The stock data returned from Alpha Vantage's Web-API includes alot of data you don?t need. The only data you need for this stockapp is in the text part, so getStock() extracts that. If a stockwith the specified symbol exists, the text part of the data is twolines of text like that shown below for MSFT, the symbol forMicrosoft stock:

symbol,open,high,low,price,volume,latestDay,previousClose,change,changePercentMSFT,107.7900,108.6600,107.7800,108.4100,10957711,2019-02-19,108.2200,0.1900,0.1756%

The first line is a comma-separated list of the names of all thepieces of data in the results. The second line is a comma-separatedlist of the data corresponding to each name. You can think of thisas a table with ten columns, a row of headings, and a row of data,e.g.,

symbol	open	high	low	price	volume	latest Day	previousClose	change	changePercent
MSFT	107.7900	108.6600	107.7800	108.2200	10957711	2019-02-19	108.2200	0.1900	0,1756

In this data, ?open? is today?s opening price of the stock,?high? is today?s highest price, ?low? is today?s lowest price,?price? is the current price, and ?previousClose? is yesterday?sclosing price.

main() function

The starter code includes a main() function that is called whenthe app starts. Add code to make it:

1. Start by displaying this message: ?Check stock prices.?

2. Ask the user for a stock symbol.

3. Call getStock() with the stock symbol, and save the returnedstock-price data.

4. Split the data (two text lines) into a list of two strings(hint: use string method .split()).

5. If the split data is a list of two strings (each in CSVformat), the data is good and the stock was found. (Hint: if thestock symbol was valid, the length of the split data should be 2.)Extract the stock?s previous closing price, opening price, highprice, low price, Prof Jeff Johnson CS 110 and current price. Do itin a way that will still work if AlphaVantage changes the order ofitems in the returned data. E.g., don?t assume that the stock?sopening price is in the second position (index 1) in the list,because if your program assumes that and tomorrow AlphaVantagemoves the opening price to another position, your app won?t workanymore. Write your app so it finds each price no matter how theyare ordered, and uses the appropriate index to get each price.

6. Print the previous closing price, opening price, high price,current price, and low price.

7. If the split data is not a list of exactly 2 items (CSVstrings), that means the stock symbol was not found. In that case,tell the user the stock symbol was not found.

8. When the app displays prices for a stock (but not when itcan?t find a stock), it should also write the same information toan output file stock_prices.txt. Each time the app successfullydisplays the prices for a stock, the app should append theinformation to the file. E.g., if the user requests prices forthree stocks, when the application quits, stock_prices.txt shouldcontain info for those three stocks, with a line like thisseparating them: ======================

9. The app should not clear and replace the data instock_prices.txt each time it is run. It should keep appendingstock prices to the file.

10. The program should ask the user ?Check another stock price?(Y or N)?, and should perform input validation to make users entera valid response. If the response is ?Y? or ?y?, the program shouldloop back to Step 2 (not Step 1) and ask for another stock symbol.If the response is ?N? or ?n?, the program closes the output fileand quits.

Example of program?s screen output

Check stock prices.

Enter stock symbol: IBM

Stock Symbol: IBM

Last Close: 133.2600

Open: 133.7600

High: 133.9300

Low: 132.2700

Current: 133.2300

Check another stock price? (Y or N): y

Enter stock symbol: aapl

Stock Symbol: AAPL

Last Close: 122.1500

Open: 123.6600

High: 124.1800

Low: 122.4900

Current: 123.0000

Check another stock price? (Y or N): x

Please enter Y or N.

Check another stock price? (Y or N): n

Example of program?s file output

Stock Symbol:IBM

Last Close: 133.2600

Open: 133.7600

High: 133.9300

Low: 132.2700

Current: 133.2300

====================

Stock Symbol:AAPL

Last Close: 122.1500

Open: 123.6600

High: 124.1800

Low: 122.4900

Current: 123.0000

====================

My current output :

Check stock prices.

Enter stock symbol:AMZN

Stock Symbol: AMZN

Traceback (most recent call last):

File "/Users/alice/Desktop/CS50/stock_market.py", line46, in

main()

File "/Users/alice/Desktop/CS50/stock_market.py", line24, in main

getStock(symbol)

NameError: name 'symbol' is not defined

TA's advice:

"It looks like you saved the stock symbol into the variable namestring and then tried to call getStock on the variable symbol,which doesn?t contain anything. If you call it on string instead,it should get you past that error. As for the price part, youshould be extracting all of the price information from the list oftwo strings that you already have. You?re saving multiple prices(opening price, closing price, etc.) so take that intoconsideration."

My current code:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41234 45 46 F 47 stock_market.py # Web App to Get Stock Market Data from AlphaVantage Service import requests #Function that gets stock info from API # Returns results in list of two strings # DO NOT EDIT THIS FUNCTION EXCEPT TO INSERT YOUR API KEY WHERE INDICATED def getStock(symbol): baseURL = "https://www.alphavantage.co/query? function=GLOBAL_QUOTE&datatype=csv" keyPart "&apikey=" + "2QPEAS3W0V7W3U0Y" #Add API key symbolPart "&symbol=" + symbol stockResponse requests.get(baseURL+keyPart+symbolPart) return stockResponse.text #Return only text part of response #Function that computes and displays results def main(): # Add code that meets the program specifications (see instructions in Canvas) flag = True while(True): if (flag==False): break main() print('Check stock prices.') string=input("Enter stock symbol:") print("Stock Symbol:", string) getStock(symbol) priceLabel print (stockdata.split()) list of prices "Stock Symbol, lastClose, Open, High, Low, Current" datastringlist[0].split(',') print (prices.split()) print (priceLabel, prices) result = open("stock_prices.txt","w") result.write(priceLabel+str(prices)) result.close() while(True): user_answer = input("Check another stock? (Y or N):") if(user_answer == 'Y'): break elif(user_answer == 'N'): .ag = False break #Code that starts the app