from urllib import request

def download_stock_data(csv_url):
    response = request.urlopen(csv_url)
    csv = response.read()
    csv_str = str(csv)
    lines = csv_str.split("\n")
    dest_url = r"stock.csv"
    fx = open(dest_url, "w")
    for line in lines:
        fx.write(line + "n")
    fx.close()