问使用python的dynamodb中的get_item

EN

import json
import boto3
from boto3.dynamodb.conditions import Key, Attr

#always start with the lambda_handler
def lambda_handler(event, context):

    # make the connection to dynamodb
    dynamodb = boto3.resource('dynamodb')

    # select the table
    table = dynamodb.Table("html_contents")

    # get item from database
    items = table.get_item(Key={"id": '1'})

{errorMessage=An error occurred (ValidationException) when calling the GetItem operation: The provided key element does not match the schema, errorType=ClientError, stackTrace=[["\/var\/task\/lambda_function.py",16,"lambda_handler","\"id\": '1'"],["\/var\/runtime\/boto3\/resources\/factory.py",520,"do_action","response = action(self, *args, **kwargs)"],["\/var\/runtime\/boto3\/resources\/action.py",83,"__call__","response = getattr(parent.meta.client, operation_name)(**params)"],["\/var\/runtime\/botocore\/client.py",314,"_api_call","return self._make_api_call(operation_name, kwargs)"],["\/var\/runtime\/botocore\/client.py",612,"_make_api_call","raise error_class(parsed_response, operation_name)"]]}