simplified IPv4 transfer stats

All RIRs publish transfers statistics in JSON format on their respective ftp sites. For example: https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json For each transaction (which may involve transfer of more than one block), the records in RIPE NCC"s stats look like this:
    {
      "transfer_date": "2012-11-30T19:00:00Z",
      "asns": [],
      "ip4nets": [
        {
          "original_set": [
            {
              "start": "94.155.0.0",
              "end": "94.155.255.255"
            }
          ],
          "transfer_set": [
            {
              "start": "94.155.176.0",
              "end": "94.155.191.255"
            },
            {
              "start": "94.155.208.0",
              "end": "94.155.215.255"
            }
          ]
        }
      ],
      "ip6nets": [],
      "type": "RESOURCE_TRANSFER",
      "source_organization": {
        "name": "ITD Network SA"
      },
      "recipient_organization": {
        "name": "Bulsatcom AD"
      },
      "source_rir": "RIPE NCC",
      "recipient_rir": "RIPE NCC"
    },

Other RIRs JSON data have the same structure, be it with a few subtle differences in tag names and available information. To make the statistics more accessible for command line tools like grep and analysis with frameworks like R, I have a python script that transforms the JSON into a .csv file with the | symbol as seperator. For the transaction above the output becomes:

2012-11-30|94.155.176.0|94.155.191.255|4096|RIPE NCC|RIPE NCC|ITD Network SA|Bulsatcom AD|RESOURCE_TRANSFER
2012-11-30|94.155.208.0|94.155.215.255|2048|RIPE NCC|RIPE NCC|ITD Network SA|Bulsatcom AD|RESOURCE_TRANSFER

The source code of the python script is here

Outputs for all RIRs (generated on 17 Dec 2019) are below

afrinic-transfers.csv
apnic-transfers.csv
arin-transfers.csv
lacnic-transfers.csv
ripencc-transfers.csv