将带有浮点数的json字符串解析为python中的字符串

Question

我正在编写一个使用 python 请求从 URL 读取 json 的类对象。json 字符串很奇怪，因为浮点数、日期和整数都是字符串。{"financialStatementList" : [ {"symbol" : "HUBS","financials" : [ {  "date" : "2018-12-31",  "Revenue" : "512980000.0",  "Revenue Growth" : "0.3657",  "Cost of Revenue" : "100357000.0",  "Gross Profit" : "412623000.0",  "R&D Expenses" : "117603000.0",  "SG&A Expense" : "343278000.0",  "Operating Expenses" : "460881000.0",  "Operating Income" : "-48258000.0",  "Interest Expense" : "21386000.0",  "Earnings before Tax" : "-61960000.0",  "Income Tax Expense" : "1868000.0",  "Net Income - Non-Controlling int" : "0.0",  "Net Income - Discontinued ops" : "0.0",  "Net Income" : "-63828000.0",  "Preferred Dividends" : "0.0",  "Net Income Com" : "-63828000.0",  "EPS" : "-1.66",  "EPS Diluted" : "-1.66",  "Weighted Average Shs Out" : "39232269.0",  "Weighted Average Shs Out (Dil)" : "38529000.0",  "Dividend per Share" : "0.0",  "Gross Margin" : "0.8044",  "EBITDA Margin" : "-0.033",  "EBIT Margin" : "-0.0791",  "Profit Margin" : "-0.124",  "Free Cash Flow margin" : "0.1002",  "EBITDA" : "-17146000.0",  "EBIT" : "-40574000.0",  "Consolidated Income" : "-63828000.0",  "Earnings Before Tax Margin" : "-0.1208",  "Net Profit Margin" : "-0.1244"}api端点的json示例如下： financialmodelingprep.com我的问题是，当我对此进行解码时，我最终得到的是对象/字符串，而不是浮点数或整数。我试过了：r = requests.get(url, params)jd = json.loads(r.text)也：r = requests.get(url, params)jd - r.json()并且，还有使用 kwargs 的变体，例如 parse_float = float 或 parse_float=Decimal我的最终目标是使用浮点数、整数和日期将其转换为格式。

Answer 1

我最终需要为我的 json 解码器编写一个自定义对象挂钩。

我还决定添加一个camelizer来缩短键。

import requests

import re

import json

from datetime import datetime

quarterdateformat = '%Y-%m-%d'

def camelize(string):

    return "".join(string.split(" "))

def convert_types(d):

    for k, v in d.items():

        #print(k, type(v))

        new_v = v

        if type(v) is str:

            #match for float

            if re.match('[-+]?[0-9]*\.[0-9]+', v):  

                new_v = float(v)

            #match for date

            if re.match('([12]\d{3}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01]))', v):  

                new_v = datetime.strptime(v, quarterdateformat).date()

        d[k] = new_v

    d = {camelize(k): v for k, v in d.items()}

    return d

url = "https://financialmodelingprep.com/api/v3/financials/income-statement/CRM,HUBS"

params = {'datatyupe' : 'json'}

r = requests.get(url, params)

jd= json.loads(r.text, object_hook=convert_types)

convert_types 是对象挂钩函数，它使用正则表达式来查找浮点数和日期并转换它们。Camelizer 用于在对象挂钩的末尾将所有键转换为 CamelCase。