'NoneType' object 没有属性 'get'：AttributeError

Question

我收到错误：“NoneType”object 没有属性“get”：AttributeError。 请帮我弄清楚。

文件“/var/task/lambda_function.py”，第 15 行，在 lambda_handler create_stripe_customer(cardData,phone,email)

import json
import boto3
import stripe
client = boto3.client('secretsmanager')
keys = json.loads(client.get_secret_value(
  SecretId = 'arn:aws:secretsmanager:ap-so',
)['SecretString'])
public_key = keys['stripe-public']
secret_key = keys['stripe-secret']
stripe.api_key = secret_key
def lambda_handler(event, context):
    cardData = event.get('cardData')
    phone = event.get('phone')
    email = event.get('email')
    create_stripe_customer(cardData,phone,email)
    return event

def create_stripe_customer(payment_info, phone, email):
    customer_id = stripe.Customer.create( phone = phone,email=email)['id']
    payment_method_id = create_payment_method(payment_info)
    stripe.PaymentMethod.attach(payment_method_id, customer = customer_id)
    return {"customer_id": customer_id,
            "plan": create_stripe_plan(customer_id)
    }

def create_payment_method(payment_info):
    return stripe.PaymentMethod.create(type = "card",
    card = {"number": payment_info.get('cardNumber'),
            "exp_month": payment_info.get('expirationMonth'),
            "exp_year": payment_info.get('expirationYear'),
            "cvc": payment_info.get('ccv'),
            }).get('id')      
        
def create_stripe_plan(customer_id):
    return stripe.Subscription.create(
        customer = customer_id,items = [{"plan": "plan_idxxxxxxx"}]).get("id")

Answer 1

为什么它不起作用

event.get()可能是为检索事件中的数据而进行的错误调用类型。 因此，数据类型将被收集并保存为NoneType 。

参考这里，您可以通过调用 event['item'] 而不是 event.get('item') 来检索事件项。

这是一个例子：

def my_handler(event, context):
    message = 'Hello {} {}!'.format(event['first_name'], 
                                    event['last_name'])  
    return { 
        'message' : message
    }