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Object Storage Service:List vector indexes (Python SDK V2)

Last Updated:Jun 03, 2026

You can use Python SDK V2 to call the ListVectorIndexes operation to list all vector indexes in a specified vector bucket.

Permissions

An Alibaba Cloud account has full permissions to access all API operations. By default, RAM users and RAM roles cannot call this operation. You must create and attach a RAM policy or a bucket policy to grant the required permissions.

API

Action

Description

ListVectorIndexes

oss:ListVectorIndexes

Lists vector indexes.

Method definition

Python SDK V2 provides two methods to list vector indexes:

  • list_vector_indexes(): Calls the operation directly. You must manually handle paging.

  • list_vector_indexes_paginator(): Uses a paginator. The software development kit (SDK) automatically handles the paging logic. This method is recommended.

# Call directly
list_vector_indexes(request: ListVectorIndexesRequest, **kwargs) → ListVectorIndexesResult

Request parameters

Parameter

Type

Description

request

ListVectorIndexesRequest

The request parameters. For more information, see ListVectorIndexesRequest

Return values

Type

Description

ListVectorIndexesResult

The return value. For more information, see ListVectorIndexesResult

For the complete definition of the list_vector_indexes method, see list_vector_indexes.

# Use a paginator
list_vector_indexes_paginator(**kwargs) → ListVectorIndexesPaginator[source]

Return values

Type

Description

ListVectorIndexesPaginator

The return value. For more information, see ListVectorIndexesPaginator

For the complete definition of the list_vector_indexes_paginator method, see list_vector_indexes_paginator.

Sample code

import argparse
import alibabacloud_oss_v2 as oss
import alibabacloud_oss_v2.vectors as oss_vectors

parser = argparse.ArgumentParser(description="list vector indexes sample")

parser.add_argument('--region', help='The region where the bucket is located.', required=True)
parser.add_argument('--endpoint', help='The OSS access endpoint.')
parser.add_argument('--account_id', help='The account ID.', required=True)
parser.add_argument('--bucket', help='The name of the bucket.', required=True)

def main():

    args = parser.parse_args()

    # Load credential values from environment variables.
    credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()

    # Use the SDK's default configuration.
    cfg = oss.config.load_default()
    cfg.credentials_provider = credentials_provider
    cfg.region = args.region
    cfg.account_id = args.account_id
    cfg.use_internal_endpoint = True  # To connect over the public network, set this to False or remove this line.
    if args.endpoint is not None:
        cfg.endpoint = args.endpoint

    client = oss_vectors.Client(cfg)

    # Create the paginator for the ListVectorIndexes operation.
    paginator = client.list_vector_indexes_paginator()

    # Iterate through the pages of vector indexes.
    for page in paginator.iter_page(oss_vectors.models.ListVectorIndexesRequest(
        bucket=args.bucket
        )
    ):
        for o in page.indexes:
            print(f'Index: {o.get("indexName")}, {o.get("dataType")}, {o.get("dimension")}, {o.get("status")}')

if __name__ == "__main__":
    main()

References

For the complete sample code for listing vector indexes, see list_vector_indexes.py.