Key-Value from long list of similar items : I have a python dictionary looking like this

[{'actual': 4.99, 'estimate': 4.55, 'period': '2019-12-31', 'symbol': 'AAPL'}, {'actual': 3.03, 'estimate': 2.84, 'period': '2019-09-30', 'symbol': 'AAPL'}, {'actual': 2.18, 'estimate': 2.1, 'period': '2019-06-30', 'symbol': 'AAPL'}]

and I need to extract the actual/estimate values for each period. Then I need to divide these vales each other. Thanks


