如何像postgresql迁移一样使用脚本创建或更新dynamo数据库表

import boto3
from botocore.exceptions import ClientError

dynamodb = boto3.client('dynamodb')

table_name = 'YourTableName'
key_schema = [
    {
        'AttributeName': 'YourAttributeName',
        'KeyType': 'HASH'  # 定义主键
    }
]
attribute_definitions = [
    {
        'AttributeName': 'YourAttributeName',
        'AttributeType': 'S'  # 定义属性类型
    }
]
provisioned_throughput = {
    'ReadCapacityUnits': 5,  # 定义读吞吐量
    'WriteCapacityUnits': 5  # 定义写吞吐量
}

try:
    # 创建表
    response = dynamodb.create_table(
        TableName=table_name,
        KeySchema=key_schema,
        AttributeDefinitions=attribute_definitions,
        ProvisionedThroughput=provisioned_throughput
    )
    print('Table created successfully:', response)
except ClientError as e:
    if e.response['Error']['Code'] == 'ResourceInUseException':
        # 表已存在，更新表
        response = dynamodb.update_table(
            TableName=table_name,
            AttributeDefinitions=attribute_definitions,
            ProvisionedThroughput=provisioned_throughput
        )
        print('Table updated successfully:', response)
    else:
        print('Error:', e)