gets premarket prices from nasdaq

nasdaq_premarket.py

import requests

def get_premarket(ticker):
    """ 
    gets premarket prices from nasdaq
    
    usage:
    >> price, volume = get_premarket('spy')
    
    """
    
    url = 'https://api.nasdaq.com/api/quote/%s/extended-trading?assetclass=etf&markettype=pre'
    data = requests.get(url % ticker.upper()).json()['data']
    
    if data['infoTable']['rows']:
        volume = int(data['infoTable']['rows'][0]['volume'].replace(',', ''))
        price = float(data['tradeDetailTable']['rows'][0]['price'].replace('$', '').replace(',', ''))
        return price, volume
    
    # no premarket trading, return last price with 0 volume
    return float(data['previousInfo'].split('$')[1]), 0