aws_parse.py

#/bin/python3
import urllib.request
import json

aws_url = "https://ip-ranges.amazonaws.com/ip-ranges.json"
aws_ips = []
with urllib.request.urlopen(aws_url) as response:
    obj = json.loads(response.readall().decode('utf-8'))
    for k, v in obj.items(): #  type dictionary
        if isinstance(v, list): # filtering on 'prefixes' which is type list
            for i in v:  # getting the list consists of 3 dicts
                for item, value in i.items():  # parsing the keys/values of those dicts
                    if item == 'ip_prefix':  # if they key is ip_prefix catch it
                        aws_ips.append(value)  # append the value of ip_prefix to our empty list

print(aws_ips)