data.py

data=requests.get('https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&outputsize=full&symbol=FB&apikey=YOURAPIKEY')
data=data.json()
prices_low,prices_high,prices_close=[],[],[]
for i in range(200,1,-1):
  d=date.today()-timedelta(i)
  d=d.strftime("%Y-%m-%d")
  try:
    prices_high.append(float(data["Time Series (Daily)"][d]["2. high"]))
    prices_low.append(float(data["Time Series (Daily)"][d]["3. low"]))
    prices_close.append(float(data["Time Series (Daily)"][d]["4. close"]))
  except:
    continue
prices_low=np.array(prices_low)
prices_high=np.array(prices_high)