Discussion on: Code Challenge: Follow the Dirty Money

import sys
import requests
import json
import re

trx = {}
nex = [ 'https://gist.githubusercontent.com/jorinvo/6f68380dd07e5db3cf5fd48b2465bb04/raw/c02b1e0b45ecb2e54b36e4410d0631a66d474323/fd0d929f-966f-4d1a-89cd-feee5a1c5347.json' ]
rgx = r".*\$([0-9]+)[,.]{1}([0-9]+)[^0-9]*"

def getAmount(s):
    global rgx
    mtc         = re.search(rgx, s)
    intpart     = mtc.group(1)
    decimalpart = mtc.group(2)
    return float("{}.{}".format(intpart, decimalpart))

while len(nex) > 0:
    url = nex.pop()
    req = requests.get(url)
    jsn = req.json()
    for link in jsn['links']:
        nex.append(link)
    idd = jsn['id']
    trx[idd] = jsn['content']

sum = 0
for i in trx.keys():
    amount  = getAmount(trx[i])
    sum     += amount

print(sum)