对于sts使用问题，可以参考以下代码示例进行解决：

import boto3 from botocore.exceptions import ClientError

创建STS客户端客户端

sts_client = boto3.client('sts')

尝试调用assume_role方法，传入相应的参数，实现临时凭证获取

try: assumed_role_object = sts_client.assume_role( RoleArn="arn:aws:iam::123456789012:role/MyRoleName", RoleSessionName="AssumeRoleSession1" ) except ClientError as e: print(e.response['Error']['Message']) else: credentials = assumed_role_object['Credentials']

# 通过获取的临时凭证操作其他服务
s3_resource = boto3.resource(
    's3',
    aws_access_key_id=credentials['AccessKeyId'],
    aws_secret_access_key=credentials['SecretAccessKey'],
    aws_session_token=credentials['SessionToken']
)
for bucket in s3_resource.buckets.all():
    print(bucket.name)