"detail": "无法读取未定义的属性'0'"

我试图使用以下代码将行添加到sheety项目的电子表格中：

import requests
import json
class FlightData:
    def __init__(self):
        self.api_id = "nMiV3AM7RZvMQGBC9d5r8qwkjikmIBzh"
        self.api_secret = "KtUx9vmoOLYFiwEL"
        self.token = " RpbiYmNrhmP04WHmcAUxCFISMRBC"
   
        def get_token(self):
        "To get Token when it is invalid"
        endpoint = "https://test.api.amadeus.com/v1/security/oauth2/token"
        parameter = {'grant_type': 'client_credentials', "client_id": self.api_id, "client_secret": self.api_secret}
        header = {"Content-Type": "application/x-www-form-urlencoded"}
        response = requests.post(url=endpoint, data=parameter, headers=header)
        response_data = response.text
        res = json.loads(response_data)
        print(res)
        self.token = res['access_token']


   def get_iata_code(self):
        endpoint = "https://test.api.amadeus.com/v1/reference-data/locations/cities"
        parameter = {"keyword": "PAR", 'max': 10}
        header = {"Authorization": f"Bearer {self.token}"}
        response = requests.get(url=endpoint, params=parameter, headers=header)
        data = json.loads(response.text)
        data1 = []
        for i in range(0, len(data['data'])):
            name = data["data"][i]["name"]
            state_code = data["data"][i]["address"]["stateCode"]
            dict1 = {"name": name, "stateCode": state_code}
            data1.append(dict1)
        return data1


def iata_code_adder(info):
    list1 = info
    endpoint = "https://api.sheety.co/fd65cc87954706f35e0debbd37a8d429/flightDeals/prices"
    print(type(info))
    for i in range(len(list1)):
        body = {"price": {"name": list1[i]["name"], "stateCode": list1[i]["stateCode"]}}
        response = requests.post(url=endpoint, json=body)
        print(response.text)
fd = FlightData()
data = fd.get_iata_code()
iata_code_adder(data)

上面的代码给了我一个错误。这是什么意思，我该如何解决它？

"errors": [
  {
    "detail": "Cannot read property '0' of undefined"
  }]

我本来希望添加包含州名称和州代码的行，但我不断收到此错误“无法读取未定义的属性‘0’”

错误信息“Cannot read property '0' of undefined”表示正在尝试访问未定义变量的索引 0。在的代码中，问题出在 iata_code_adder 函数中，具体来说是在这一行：

body = {"price": {"name": list1[i]["name"], "stateCode": list1[i]["stateCode"]}}

出现这个错误的原因是正在访问 list1[i] ，但是的 API 响应中可能没有 data 字段，或者 data 字段是一个空列表。因此，当尝试访问 list1[i]["name"] 和 list1[i]["stateCode"] 时，就会出现错误，因为它无法读取 undefined 的属性 '0'。

为了解决这个问题，需要检查的 API 响应，确保它包含 data 字段，并且该字段是一个非空列表。可以通过打印 data 变量的值来检查这一点。

以下是修改后的代码：

import requests
import json


class FlightData:
    def __init__(self):
        self.api_id = "nMiV3AM7RZvMQGBC9d5r8qwkjikmIBzh"
        self.api_secret = "KtUx9vmoOLYFiwEL"
        self.token = "RpbiYmNrhmP04WHmcAUxCFISMRBC"

        def get_token(self):
            "To get Token when it is invalid"
            endpoint = "https://test.api.amadeus.com/v1/security/oauth2/token"
            parameter = {
                'grant_type': 'client_credentials',
                "client_id": self.api_id,
                "client_secret": self.api_secret
            }
            header = {"Content-Type": "application/x-www-form-urlencoded"}
            response = requests.post(url=endpoint, data=parameter, headers=header)
            response_data = response.text
            res = json.loads(response_data)
            print(res)
            self.token = res['access_token']

    def get_iata_code(self):
        endpoint = "https://test.api.amadeus.com/v1/reference-data/locations/cities"
        parameter = {"keyword": "PAR", 'max': 10}
        header = {"Authorization": f"Bearer {self.token}"}
        response = requests.get(url=endpoint, params=parameter, headers=header)
        data = json.loads(response.text)
        # 检查 data 是否存在并且是非空列表
        if 'data' in data and data['data']:
            data1 = []
            for i in range(0, len(data['data'])):
                name = data["data"][i]["name"]
                state_code = data["data"][i]["address"]["stateCode"]
                dict1 = {"name": name, "stateCode": state_code}
                data1.append(dict1)
            return data1
        else:
            print("API 响应中没有 data 字段，或者 data 字段为空列表")
            return []


def iata_code_adder(info):
    list1 = info
    endpoint = "https://api.sheety.co/fd65cc87954706f35e0debbd37a8d429/flightDeals/prices"
    print(type(info))
    for item in list1:
        body = {"price": {"name": item["name"], "stateCode": item["stateCode"]}}
        response = requests.post(url=endpoint, json=body)
        print(response.text)


fd = FlightData()
data = fd.get_iata_code()
iata_code_adder(data)

在这个修改后的代码中，我们在 get_iata_code 函数中添加了一个检查，以确保 data 字段存在并且是一个非空列表。如果 data 字段不存在或者为空列表，则打印一条错误消息并返回一个空列表。这将防止在 iata_code_adder 函数中出现“Cannot read property '0' of undefined”错误。