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I have some code that downloads historical stock data from Yahoo finance for a list of stocks and saves it into a .csv file. I want to do some changes to this code as follows:
1) Remove the first column from the output.
2) Change the functionality slightly so that the program just appends data every day. I would like to use the program every day to update my files and it takes quite a long time to download all the history from scratch.
3) The program exports data sorted by newest first or oldest first. There is a bug with the oldest first option that needs to be fixed.