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Boto3错误: botocore.异常.NoCredentialsError: 无法找到凭据

当我简单地运行下面的代码时，我总是得到这个错误。
s3 = boto3.resource('s3')
bucket_name = "python-sdk-sample-% s" % uuid.uuid4()
print("使用name:" 创建新bucket，bucket...

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