tencent cloud

Feedback

Checking Whether Objects Exist

Last updated: 2024-02-05 11:10:42

    Overview

    This document provides the SDK code samples to determine whether an object exists.

    Checking Whether Objects Exist

    Feature description

    This API is used to check whether an object exists in a bucket.

    Method prototype

    object_exists(Bucket, Key)

    Sample request

    # -*- coding=utf-8
    from qcloud_cos import CosConfig
    from qcloud_cos import CosS3Client
    import sys
    import os
    import logging
    
    # In most cases, set the log level to INFO. If you need to debug, you can set it to DEBUG and the SDK will print information about the communication with the server.
    logging.basicConfig(level=logging.INFO, stream=sys.stdout)
    
    # 1. Set user attributes such as secret_id, secret_key, and region. Appid has been removed from CosConfig and thus needs to be specified in Bucket, which is formatted as BucketName-Appid.
    secret_id = os.environ['COS_SECRET_ID'] # User `SecretId`. We recommend you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/32675.
    secret_key = os.environ['COS_SECRET_KEY'] # User `SecretKey`. We recommend you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/32675.
    region = 'ap-beijing' # Replace it with the actual region, which can be viewed in the console at https://console.tencentcloud.com/cos5/bucket.
    # For the list of regions supported by COS, visit https://www.tencentcloud.com/document/product/436/6224.
    token = None # Token is required for temporary keys but not permanent keys. For more information about how to generate and use a temporary key, visit https://www.tencentcloud.com/document/product/436/14048.
    scheme = 'https' # Specify whether to use HTTP or HTTPS protocol to access COS. This field is optional and is `https` by default.
    
    config = CosConfig(Region=region, SecretId=secret_id, SecretKey=secret_key, Token=token, Scheme=scheme)
    client = CosS3Client(config)
    
    response = client.object_exists(
    Bucket='examplebucket-1250000000',
    Key='exampleobject')
    print(response)

    Parameter description

    Parameter
    Description
    Type
    Required
    Bucket
    Bucket name in the format of BucketName-APPID
    String
    Yes
    Key
    Object key, which uniquely identifies an object in a bucket. For example, if an object’s access endpoint is examplebucket-1250000000.cos.ap-guangzhou.myqcloud.com/doc/pic.jpg, its key is doc/pic.jpg.
    String
    Yes

    Response description

    True means the object exists, while False means the object does not exist.
    Contact Us

    Contact our sales team or business advisors to help your business.

    Technical Support

    Open a ticket if you're looking for further assistance. Our Ticket is 7x24 avaliable.

    7x24 Phone Support