Sort largest IP range to smallest (#2)

* Try sorting largest IP range to smallest

* Update README.md

README.md

@@ -28,7 +28,7 @@ The order of processing is as follows:
 1. Basic de-duplication by removing duplicate entries of the same CIDR.
    - A warning will be generated if a duplicate does not contain the same data as it's original.
    - Only the first instance of a CIDR will be retained in the final data source.
-2. The de-duplicated list is then sorted.
+2. The de-duplicated list is then sorted in decending order by the quantity of IP addresses in each CIDR
 3. Any CIDRs which are private networks are discarded.
 4. Any 3-letter country codes are converted to 2 letter country codes.
 5. Next all CIDRs are looped through and compared against previous CIDRs to identify any overlaps / subnets.

scripts/process.py

@@ -59,8 +59,8 @@ def process(json_file):
         # Quickly handle identical CIDR entries.
         ip_data_list = deduplicate(ip_data_list)
 
-        # Sort the list based on the IP range
-        ip_data_list.sort(key=lambda entry: ipaddress.ip_network(entry["ip_range"], strict=False))
+        # Sort the list based on the number of IP addresses in descending order
+        ip_data_list.sort(key=lambda entry: ipaddress.ip_network(entry["ip_range"], strict=False).num_addresses, reverse=True)
 
         unique_ranges = set()
         result = []