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-StocksGame
+# Stock trading bot
+During my senior year of high school, my economics class had a
+competition where we traded stocks on a fake online exchange. 
+I wrote a Python shell script which could make purchasing decisions
+for me, and submit them to the website. It uses Beautiful Soup to 
+log in to the virtual exchange with my details, and to collect 
+stock information from sources like Yahoo Finance. When given a
+budget, it chooses a diverse selection of shares which most closely
+approaches the budget without exceeding it. 
+
+## Challenges
+Using web scraping to collect data online is difficult to do performantly
+and robustly. Network errors and slow internet speeds caused the program to
+run very slowly, and changes to page layouts could cause the scraper to
+err. To solve these errors, a script can query several pages in parallel
+and retry on network errors. Caching can also significantly speed things
+up. I chose Yahoo Stocks because its page layout changes very little over
+time, and I use BeautifulSoup, a very robust HTML parser and scraper to
+reliably retrieve data. 
+