Bucket Operations

Overview
This document provides an overview of APIs and SDK code samples for basic bucket operations.
Note: 
We recommend you use a temporary key as instructed in Generating and Using Temporary Keys to call the SDK for security purposes. When you apply for a temporary key, follow the Notes on Principle of Least Privilege to avoid leaking resources besides your buckets and objects.
If you must use a permanent key, we recommend you follow the Notes on Principle of Least Privilege to limit the scope of permission on the permanent key.
API
Operation
Description
GET Service
Querying a bucket list
Queries the list of all buckets under the specified account
PUT Bucket
Creating a bucket
Creates a bucket under a specified account
HEAD Bucket
Checking a bucket and its permissions
Checks whether a bucket exists and whether you have permission to access it
DELETE Bucket
Deleting a bucket
Deletes an empty bucket under a specified account
Querying a Bucket List
Feature description
This API (GET Service) is used to query the list of all buckets in an account.
Method prototype
list_buckets()
Sample request
# -*- coding=utf-8
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client
import sys
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 the communication information of the client.
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 = 'SecretId'     # Replace it with the actual SecretId, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
secret_key = 'SecretKey'     # Replace it with the actual SecretKey, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
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, see https://www.tencentcloud.com/document/product/436/6224?from_cn_redirect=1
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.list_buckets(
)
Response description
Query a bucket list in Dict format.
{
    'Buckets': {
        'Bucket': [
            {
                'Name': 'string',
                'Location': 'string',
                'CreationDate': 'string'
            },
        ],
    },
    'Owner': {
        'DisplayName': 'string',
        'ID': 'string'
    }
}
Parameter
Description
Type
Buckets
A buckets list
Dict
Bucket
A buckets list
List
Name
Bucket name
String
Location
Name of bucket region
String
CreationDate
Time of Bucket creation
String
Owner
Bucket owner information
Dict
DisplayName
Bucket owner name
String
ID
Bucket owner ID
String
Creating a Bucket
Feature description
This API (PUT Bucket) is used to create a bucket under a specified account.
Method prototype
create_bucket(Bucket, BucketAZConfig=None, **kwargs)
Sample request
# -*- coding=utf-8
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client
import sys
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 the communication information of the client.
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 = 'SecretId'     # Replace it with the actual SecretId, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
secret_key = 'SecretKey'     # Replace it with the actual SecretKey, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
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, see https://www.tencentcloud.com/document/product/436/6224?from_cn_redirect=1
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)
﻿
# The bucket name does not support uppercase letters, and the COS backend will automatically convert uppercase letters passed in to lowercase when creating the bucket.
response = client.create_bucket(
    Bucket='examplebucket-1250000000'
)
Sample request with all parameters
response = client.create_bucket(
    Bucket='examplebucket-1250000000',
    BucketAZConfig='string',
    ACL='private'|'public-read'|'public-read-write',
    GrantFullControl='string',
    GrantRead='string',
    GrantWrite='string'    
)
Field description
Parameter
Description
Type
Required
Bucket
Name of the bucket to be created in the format of BucketName-APPID. <br>The bucket name does not support uppercase letters, and the COS backend will automatically convert uppercase letters passed in to lowercase when creating the bucket.
String
Yes
BucketAZConfig
AZ configuration of the bucket. To create an MAZ bucket, specify 'MAZ'.
String
No
ACL
Sets the bucket ACL, such as 'private', 'public-read', 'public-read-write'
String
No
GrantFullControl
Grants a specified account full Read/Write permission for a bucket in the format of id="OwnerUin"
String
No
GrantRead
Grants a specified account Read permission for a bucket in the format of id="OwnerUin"
String
No
GrantWrite
Grants a specified account Write permission for a bucket in the format of id="OwnerUin"
String
No
Response description
This API returns None.
Checking a Bucket and Its Permissions
Feature description
This API is used to verify whether a bucket exists and you have permission to access it.
Method prototype
head_bucket(Bucket)
Sample request
# -*- coding=utf-8
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client
import sys
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 the communication information of the client.
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 = 'SecretId'     # Replace it with the actual SecretId, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
secret_key = 'SecretKey'     # Replace it with the actual SecretKey, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
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, see https://www.tencentcloud.com/document/product/436/6224?from_cn_redirect=1
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.head_bucket(
    Bucket='examplebucket-1250000000'
)
Field description
Parameter
Description
Type
Required
Bucket
The name of a bucket to query. Format: BucketName-APPID
String
Yes
Response description
This API returns None.
Deleting a Bucket
Feature description
This API (DELETE Bucket) is used to delete an empty bucket under a specified account.
Method prototype
delete_bucket(Bucket)
Sample request
# -*- coding=utf-8
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client
import sys
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 the communication information of the client.
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 = 'SecretId'     # Replace it with the actual SecretId, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
secret_key = 'SecretKey'     # Replace it with the actual SecretKey, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
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, see https://www.tencentcloud.com/document/product/436/6224?from_cn_redirect=1
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.delete_bucket(
    Bucket='examplebucket-1250000000'
)
Field description
Parameter
Description
Type
Required
Bucket
The name of a bucket to delete, must be in the format: BucketName-APPID
String
Yes
Response description
This API returns None.
Checking whether a bucket exists
Feature description
Checking Whether Buckets Exist
Method prototype
bucket_exists(Bucket)
Sample request
# -*- coding=utf-8
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client
import sys
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 the communication information of the client.
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 = 'SecretId'     # Replace it with the actual SecretId, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
secret_key = 'SecretKey'     # Replace it with the actual SecretKey, which can be viewed and managed at https://console.tencentcloud.com/cam/capi
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, see https://www.tencentcloud.com/document/product/436/6224?from_cn_redirect=1
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.bucket_exists(
    Bucket='examplebucket-1250000000'
)
print(response)
Field description
Parameter
Description
Type
Required
Bucket
Bucket name in the format of BucketName-APPID
String
Yes
Response description
True indicates that the bucket exists. False indicates that the bucket does not exist.

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tencent cloud

Overview

Querying a Bucket List

Feature description

Method prototype

Sample request

Response description

Creating a Bucket

Feature description

Method prototype

Sample request

Sample request with all parameters

Field description

Response description

Checking a Bucket and Its Permissions

Feature description

Method prototype

Sample request

Field description

Response description

Deleting a Bucket

Feature description

Method prototype

Sample request

Field description

Response description

Checking whether a bucket exists

Feature description

Method prototype

Sample request

Field description

Response description

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API	Operation	Description
GET Service	Querying a bucket list	Queries the list of all buckets under the specified account
PUT Bucket	Creating a bucket	Creates a bucket under a specified account
HEAD Bucket	Checking a bucket and its permissions	Checks whether a bucket exists and whether you have permission to access it
DELETE Bucket	Deleting a bucket	Deletes an empty bucket under a specified account

Parameter	Description	Type
Buckets	A buckets list	Dict
Bucket	A buckets list	List
Name	Bucket name	String
Location	Name of bucket region	String
CreationDate	Time of Bucket creation	String
Owner	Bucket owner information	Dict
DisplayName	Bucket owner name	String
ID	Bucket owner ID	String

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Overview

Querying a Bucket List

Feature description

Method prototype

Sample request

Response description

Creating a Bucket

Feature description

Method prototype

Sample request

Sample request with all parameters

Field description

Response description

Checking a Bucket and Its Permissions

Feature description

Method prototype

Sample request

Field description

Response description

Deleting a Bucket

Feature description

Method prototype

Sample request

Field description

Response description

Checking whether a bucket exists

Feature description

Method prototype