Use Requests,and stop using Python 2.
import requests url = 'https://www.cmegroup.com/CmeWS/mvc/TimeandSales/300/G/N8?timeSlot=16&entryDate=20180522&pageNumber=1&_=1527157308610' response = requests.get(url).json()
Output:>>> response
{'entries': [],
'productDescription': 'Corn Futures Jul 2028 Globex',
'props': {'pageNumber': 1, 'pageSize': 100, 'pageTotal': 0},
'tradeDate': '-'}
>>> response['tradeDate']
'-'