从json创建多个python类实例 | 从json创建多个python类实例

本文介绍了从json创建多个python类实例的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在编写一些测试以评估休息服务我的回应是

I am writing some tests to evaluate a rest servicemy response is

[ { "Title_Id": 1, "Title": "Mr", "TitleDescription": "Mr", "TitleGender": "Male", "Update_Date": "2012-07-21T18:43:04" }, { "Title_Id": 2, "Title": "Mrs", "TitleDescription": "Mrs", "TitleGender": "Female", "Update_Date": "2012-07-21T18:42:59" }, { "Title_Id": 3, "Title": "Sir", "TitleDescription": "Sir", "TitleGender": "Male", "Update_Date": null }]

，并且需要创建该类的多个实例

and need to create multiple instance of the class

class TitleInfo:
  def __init__(self, Title_Id, Title, TitleDescription, TitleGender, Update_Date ):
    self.Title_Id = Title_Id
    self.Title = Title
    self.TitleDescription = TitleDescription
    self.TitleGender = TitleGender
    self.Update_Date = Update_Date

我所做的是

def GetTitle(self):
  try:
    response = *#......"The string shown above"*
    if  isinstance(response, str) :
      Records = json.loads(response)
      RecTitles = []
      for num in range(0, len(Records)):
        RecTitle =TitleInfo(Records[num]['Title_Id'],Records[num]['Title'],Records[num]['TitleDescription'],Records[num]['TitleGender'],Records[num]['Update_Date'])
        RecTitles.append(RecTitle)

这很好用....我需要知道还有其他更简短的方法吗?

This is working fine ....I need to know is there more short and sweet way to do that?

推荐答案

您可以解压缩每个dict并将其作为TitleInfo的参数:

You could just unpack each dict and give that as an argument to TitleInfo:

RecTitles = [TitleInfo(**x) for x in json.loads(response)]

以下是 Python教程中的说明:

>>> def parrot(voltage, state='a stiff', action='voom'):
...     print("-- This parrot wouldn't", action, end=' ')
...     print("if you put", voltage, "volts through it.", end=' ')
...     print("E's", state, "!")
...
>>> d = {"voltage": "four million", "state": "bleedin' demised", "action": "VOOM"}
>>> parrot(**d)
-- This parrot wouldn't VOOM if you put four million volts through it. E's bleedin' demised !

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