如何将JSON中的数字解析为Intrinio中的PYTHON？

Question

我在解析API调用中的市值（它是一个数字）时遇到问题。我得到了数据，但出于我正在开发的程序的目的，我只需要数字，而不是其他东西。在

import csv
import intrinio
import requests
import json
import re

api_username = "b9cb2b8cbda8dde39f27a21f66e12afd"
api_password = "6d71a6dd01dd554f92a03f0e1b40dd44"

# CSV_URL = 'https://api.intrinio.com/financials/reported.csv?identifier=AAPL&statement=income_statement&fiscal_year=2015&fiscal_period=FY'
# CSV_URL2 = 'https://api.intrinio.com/financials/standardized.csv?identifier=AAPL&statement=balance_sheet&type=FY&fiscal_period=FY&date=2017-05-20'
CSV_URL3 = 'https://api.intrinio.com/data_point?identifier=AAPL&item=marketcap'

with requests.Session() as s:
    download = s.get(CSV_URL3,auth=(api_username, api_password))
    decoded_content = download.content.decode('utf-8')
    cr = csv.reader(decoded_content.splitlines(), delimiter=',')
    my_list = list(cr)

fx = open(r'test3.csv', 'w')
for item in my_list:
    fx.write("%s\n" % item)

str1 = my_list[0][2]
num = re.findall('\d+', str1)
final_number = float(num[0])
print(final_number)