How to set public access permissions for objects in OSS specific path in Python oss2?

Using the Python oss2 library, set public access permissions for objects under specific paths in Alibaba Cloud OSS buckets, and ensure that new objects will automatically inherit this permission in the future. This article will explain in detail how to implement this function.

The path-level permission control cannot be achieved using put_bucket_acl API directly because it can only set the access control list (ACL) of the entire bucket. To implement path-level control, the bucket policy must be set using put_bucket_policy API.

put_bucket_policy API provides more granular access policy control. By writing a bucket policy, you can accurately define which users or groups of users can access which objects. In order to make all objects under the /sample/video path publicly readable to anonymous users, a policy needs to be created that allows Principal to read all objects under the path as * (on behalf of anonymous users).

Alibaba Cloud official documentation provides many examples of bucket policy, which you can refer to these examples to write policies that meet your needs. It should be noted that "public access" here means that anonymous users have read-only permissions.

By correctly configuring put_bucket_policy , public access control over all objects in the specified path (including objects uploaded in the future) without changing the access permissions of the bucket itself.

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