gistfile1.txt

{
    "Contents": [
        {
            "LastModified": "2018-06-15T20:40:28.000Z", 
            "ETag": "\"80f71457cb2f2aae8d\"", 
            "StorageClass": "STANDARD", 
            "Key": "000097-20030605.pdf", 
            "Owner": {
                "DisplayName": "bpr-admin", 
                "ID": "6822198f40e279e66289724108f3a791719ef9422f72611ca45b0ad7cd5e9d12"
            }, 
            "Size": 15646
        }, 
        {
            "LastModified": "2018-06-15T20:40:28.000Z", 
            "ETag": "\"dafa3ed3e751f2de9\"", 
            "StorageClass": "STANDARD", 
            "Key": "000097-20040317.pdf", 
            "Owner": {
                "DisplayName": "bpr-admin", 
                "ID": "6822198f40e279e66289724108f3a791719ef9422f72611ca45b0ad7cd5e9d12"
            }, 
            "Size": 16134
        }, 
        {
            "LastModified": "2018-06-15T20:40:28.000Z", 
            "ETag": "\"1168fc23b012f7e0e00cfa57fa725cd0\"", 
            "StorageClass": "STANDARD", 
            "Key": "000221-19910522-0-a.pdf", 
            "Owner": {
                "DisplayName": "bpr-admin", 
                "ID": "6822198f40e279e66289724108f3a791719ef9422f72611ca45b0ad7cd5e9d12"
            }, 
            "Size": 22933
        },  ...
        
        
        -------------------------------------------------------
        
        with open('objects.json') as f:
            objects = json.load(f)
            for object in objects:
                print('file:', object['Contents']['Key'])