如何使用Amplify React在Python中获取确认后Lambda触发器中的Cognito身份Id？

npm install -g @aws-amplify/cli

amplify configure

amplify init

amplify add auth

amplify push

from aws_cdk import (
    aws_lambda as lambda_,
    aws_cognito as cognito,
    core,
)

def lambda_handler(event, context):
    # 获取Cognito身份ID
    cognito_id = event['requestContext']['identity']['cognitoIdentityId']
    
    # 执行其他操作，如处理身份ID、返回响应等
    
    return {
        'statusCode': 200,
        'body': 'Success'
    }

class MyStack(core.Stack):
    def __init__(self, scope: core.Construct, id: str, **kwargs) -> None:
        super().__init__(scope, id, **kwargs)
        
        # 创建Lambda函数
        lambda_fn = lambda_.Function(self, 'MyLambdaFunction',
            runtime=lambda_.Runtime.PYTHON_3_9,
            handler='index.lambda_handler',
            code=lambda_.Code.from_asset('lambda'),
            )
        
        # 创建触发器
        lambda_fn.add_event_source(lambda_.EventSource.cognito_user_pool(
            user_pool=cognito.UserPool.from_user_pool_id(self, 'MyUserPool', 'user_pool_id'),
            trigger=lambda_.functions.Trigger.EVENTS,
        ))

cdk deploy